42249656 has 16 divisors (see below), whose sum is σ = 80173800. Its totient is φ = 20869984.

The previous prime is 42249653. The next prime is 42249667. The reversal of 42249656 is 65694224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42249653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31151 + ... + 32478.

Almost surely, 2^42249656 is an apocalyptic number.

It is an amenable number.

42249656 is a deficient number, since it is larger than the sum of its proper divisors (37924144).

42249656 is a wasteful number, since it uses less digits than its factorization.

42249656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63718 (or 63714 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 42249656 is about 6499.9735384077. The cubic root of 42249656 is about 348.2900431284.

The spelling of 42249656 in words is "forty-two million, two hundred forty-nine thousand, six hundred fifty-six".