42591828 has 12 divisors (see below), whose sum is σ = 99380960. Its totient is φ = 14197272.

The previous prime is 42591811. The next prime is 42591841. The reversal of 42591828 is 82819524.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1774648 + ... + 1774671.

Almost surely, 2^42591828 is an apocalyptic number.

It is an amenable number.

42591828 is an abundant number, since it is smaller than the sum of its proper divisors (56789132).

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

42591828 is a wasteful number, since it uses less digits than its factorization.

42591828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549326 (or 3549324 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 42591828 is about 6526.2414910881. The cubic root of 42591828 is about 349.2277613343.

The spelling of 42591828 in words is "forty-two million, five hundred ninety-one thousand, eight hundred twenty-eight".