100190420 has 72 divisors (see below), whose sum is σ = 243549600. Its totient is φ = 34499520.

The previous prime is 100190399. The next prime is 100190449. The reversal of 100190420 is 24091001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44891 + ... + 47069.

Almost surely, 2^100190420 is an apocalyptic number.

100190420 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 100190420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121774800).

100190420 is an abundant number, since it is smaller than the sum of its proper divisors (143359180).

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

100190420 is a wasteful number, since it uses less digits than its factorization.

100190420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 100190420 is about 10009.5164718382. The cubic root of 100190420 is about 464.4533136708.

The spelling of 100190420 in words is "one hundred million, one hundred ninety thousand, four hundred twenty".