42161136 has 40 divisors (see below), whose sum is σ = 109149264. Its totient is φ = 14023680.

The previous prime is 42161131. The next prime is 42161143. The reversal of 42161136 is 63116124.

It is a super-2 number, since 2×42161136² = 3555122777620992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42161131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41790 + ... + 42786.

Almost surely, 2^42161136 is an apocalyptic number.

It is an amenable number.

42161136 is an abundant number, since it is smaller than the sum of its proper divisors (66988128).

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

42161136 is a wasteful number, since it uses less digits than its factorization.

42161136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889 (or 1883 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 42161136 is about 6493.1607095466. The cubic root of 42161136 is about 348.0466313519.

The spelling of 42161136 in words is "forty-two million, one hundred sixty-one thousand, one hundred thirty-six".