42858831 has 16 divisors (see below), whose sum is σ = 58682624. Its totient is φ = 27808704.

The previous prime is 42858799. The next prime is 42858841. The reversal of 42858831 is 13885824.

It is not a de Polignac number, because 42858831 - 2⁵ = 42858799 is a prime.

It is a super-2 number, since 2×42858831² = 3673758789373122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42858831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42858841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58590 + ... + 59316.

It is an arithmetic number, because the mean of its divisors is an integer number (3667664).

Almost surely, 2^42858831 is an apocalyptic number.

42858831 is a deficient number, since it is larger than the sum of its proper divisors (15823793).

42858831 is a wasteful number, since it uses less digits than its factorization.

42858831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230.

The product of its digits is 61440, while the sum is 39.

The square root of 42858831 is about 6546.6656398506. The cubic root of 42858831 is about 349.9559971892.

The spelling of 42858831 in words is "forty-two million, eight hundred fifty-eight thousand, eight hundred thirty-one".