42631355 has 16 divisors (see below), whose sum is σ = 56872704. Its totient is φ = 30464640.

The previous prime is 42631339. The next prime is 42631387. The reversal of 42631355 is 55313624.

It is not a de Polignac number, because 42631355 - 2⁴ = 42631339 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8564 + ... + 12593.

It is an arithmetic number, because the mean of its divisors is an integer number (3554544).

Almost surely, 2^42631355 is an apocalyptic number.

42631355 is a deficient number, since it is larger than the sum of its proper divisors (14241349).

42631355 is a wasteful number, since it uses less digits than its factorization.

42631355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21206.

The product of its digits is 10800, while the sum is 29.

The square root of 42631355 is about 6529.2691015151. The cubic root of 42631355 is about 349.3357605942.

Adding to 42631355 its reverse (55313624), we get a palindrome (97944979).

The spelling of 42631355 in words is "forty-two million, six hundred thirty-one thousand, three hundred fifty-five".