42812864 has 56 divisors (see below), whose sum is σ = 89050368. Its totient is φ = 20401920.

The previous prime is 42812857. The next prime is 42812873. The reversal of 42812864 is 46821824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129179 + ... + 129509.

Almost surely, 2^42812864 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 42812864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44525184).

42812864 is an abundant number, since it is smaller than the sum of its proper divisors (46237504).

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

42812864 is a wasteful number, since it uses less digits than its factorization.

42812864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 423 counting only the distinct ones).

The product of its digits is 24576, while the sum is 35.

The square root of 42812864 is about 6543.1539795423. The cubic root of 42812864 is about 349.8308407054.

The spelling of 42812864 in words is "forty-two million, eight hundred twelve thousand, eight hundred sixty-four".