43900122 has 16 divisors (see below), whose sum is σ = 100343232. Its totient is φ = 12542880.

The previous prime is 43900049. The next prime is 43900133. The reversal of 43900122 is 22100934.

It is a super-2 number, since 2×43900122² = 3854441423229768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522579 + ... + 522662.

It is an arithmetic number, because the mean of its divisors is an integer number (6271452).

Almost surely, 2^43900122 is an apocalyptic number.

43900122 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

43900122 is an abundant number, since it is smaller than the sum of its proper divisors (56443110).

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

43900122 is a wasteful number, since it uses less digits than its factorization.

43900122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045253.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 43900122 is about 6625.7167159485. The cubic root of 43900122 is about 352.7675068156.

The spelling of 43900122 in words is "forty-three million, nine hundred thousand, one hundred twenty-two".