145412190 has 96 divisors (see below), whose sum is σ = 471384576. Its totient is φ = 30214080.

The previous prime is 145412173. The next prime is 145412191. The reversal of 145412190 is 91214541.

145412190 is a `hidden beast` number, since 1 + 454 + 121 + 90 = 666.

It is a super-2 number, since 2×145412190² = 42289410001192200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145412191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3562 + ... + 17421.

It is an arithmetic number, because the mean of its divisors is an integer number (4910256).

Almost surely, 2^145412190 is an apocalyptic number.

145412190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145412190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235692288).

145412190 is an abundant number, since it is smaller than the sum of its proper divisors (325972386).

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

145412190 is a wasteful number, since it uses less digits than its factorization.

145412190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21014 (or 21011 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 145412190 is about 12058.6976908786. The cubic root of 145412190 is about 525.8561269490.

The spelling of 145412190 in words is "one hundred forty-five million, four hundred twelve thousand, one hundred ninety".