42691156 has 6 divisors (see below), whose sum is σ = 74709530. Its totient is φ = 21345576.

The previous prime is 42691141. The next prime is 42691163. The reversal of 42691156 is 65119624.

It can be written as a sum of positive squares in only one way, i.e., 36360900 + 6330256 = 6030^2 + 2516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5336391 + ... + 5336398.

Almost surely, 2^42691156 is an apocalyptic number.

It is an amenable number.

42691156 is a deficient number, since it is larger than the sum of its proper divisors (32018374).

42691156 is a wasteful number, since it uses less digits than its factorization.

42691156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10672793 (or 10672791 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 42691156 is about 6533.8469526000. The cubic root of 42691156 is about 349.4990274928.

The spelling of 42691156 in words is "forty-two million, six hundred ninety-one thousand, one hundred fifty-six".