190002120 has 128 divisors (see below), whose sum is σ = 710691840. Its totient is φ = 39479040.

The previous prime is 190002119. The next prime is 190002121. The reversal of 190002120 is 21200091.

It is a happy number.

190002120 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (190002119) and next prime (190002121).

It is a super-2 number, since 2×190002120² = 72201611208988800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 190002120.

It is not an unprimeable number, because it can be changed into a prime (190002121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1042 + ... + 19521.

It is an arithmetic number, because the mean of its divisors is an integer number (5552280).

Almost surely, 2^190002120 is an apocalyptic number.

190002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355345920).

190002120 is an abundant number, since it is smaller than the sum of its proper divisors (520689720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

190002120 is a wasteful number, since it uses less digits than its factorization.

190002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20595 (or 20591 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 190002120 is about 13784.1256523582. The cubic root of 190002120 is about 574.8918460728.

The spelling of 190002120 in words is "one hundred ninety million, two thousand, one hundred twenty".