43156242 has 12 divisors (see below), whose sum is σ = 93505230. Its totient is φ = 14385408.

The previous prime is 43156237. The next prime is 43156249. The reversal of 43156242 is 24265134.

43156242 is a `hidden beast` number, since 4 + 31 + 5 + 624 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39200121 + 3956121 = 6261^2 + 1989^2 .

It is a super-2 number, since 2×43156242² = 3724922447125128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43156249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1198767 + ... + 1198802.

Almost surely, 2^43156242 is an apocalyptic number.

43156242 is an abundant number, since it is smaller than the sum of its proper divisors (50348988).

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

43156242 is a wasteful number, since it uses less digits than its factorization.

43156242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397577 (or 2397574 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 43156242 is about 6569.3410628464. The cubic root of 43156242 is about 350.7636171104.

The spelling of 43156242 in words is "forty-three million, one hundred fifty-six thousand, two hundred forty-two".