43420172 has 12 divisors (see below), whose sum is σ = 76696200. Its totient is φ = 21506976.

The previous prime is 43420133. The next prime is 43420199. The reversal of 43420172 is 27102434.

It is a super-2 number, since 2×43420172² = 3770622673019168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50297 + ... + 51152.

It is an arithmetic number, because the mean of its divisors is an integer number (6391350).

Almost surely, 2^43420172 is an apocalyptic number.

It is an amenable number.

43420172 is a deficient number, since it is larger than the sum of its proper divisors (33276028).

43420172 is a wasteful number, since it uses less digits than its factorization.

43420172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101560 (or 101558 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 43420172 is about 6589.3984550944. The cubic root of 43420172 is about 351.4772176756.

The spelling of 43420172 in words is "forty-three million, four hundred twenty thousand, one hundred seventy-two".