42631264 has 36 divisors (see below), whose sum is σ = 90894636. Its totient is φ = 19673472.

The previous prime is 42631243. The next prime is 42631271. The reversal of 42631264 is 46213624.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1467 + ... + 9349.

It is an arithmetic number, because the mean of its divisors is an integer number (2524851).

Almost surely, 2^42631264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42631264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45447318).

42631264 is an abundant number, since it is smaller than the sum of its proper divisors (48263372).

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

42631264 is a wasteful number, since it uses less digits than its factorization.

42631264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7919 (or 7898 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 42631264 is about 6529.2621328907. The cubic root of 42631264 is about 349.3355120325.

Adding to 42631264 its reverse (46213624), we get a palindrome (88844888).

The spelling of 42631264 in words is "forty-two million, six hundred thirty-one thousand, two hundred sixty-four".