42637963 has 4 divisors (see below), whose sum is σ = 43337008. Its totient is φ = 41938920.

The previous prime is 42637937. The next prime is 42637997. The reversal of 42637963 is 36973624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42637963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42632963) 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, 349431 + ... + 349552.

It is an arithmetic number, because the mean of its divisors is an integer number (10834252).

Almost surely, 2^42637963 is an apocalyptic number.

42637963 is a deficient number, since it is larger than the sum of its proper divisors (699045).

42637963 is an equidigital number, since it uses as much as digits as its factorization.

42637963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699044.

The product of its digits is 163296, while the sum is 40.

The square root of 42637963 is about 6529.7751109820. The cubic root of 42637963 is about 349.3538090584.

The spelling of 42637963 in words is "forty-two million, six hundred thirty-seven thousand, nine hundred sixty-three".