42154261631 has 16 divisors (see below), whose sum is σ = 45229069440. Its totient is φ = 39165703200.

The previous prime is 42154261603. The next prime is 42154261637. The reversal of 42154261631 is 13616245124.

It is not a de Polignac number, because 42154261631 - 2¹⁸ = 42153999487 is a prime.

It is a super-2 number, since 2×42154261631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42154261591 and 42154261600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42154261637) 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, 2863616 + ... + 2878298.

It is an arithmetic number, because the mean of its divisors is an integer number (2826816840).

Almost surely, 2^42154261631 is an apocalyptic number.

42154261631 is a deficient number, since it is larger than the sum of its proper divisors (3074807809).

42154261631 is a wasteful number, since it uses less digits than its factorization.

42154261631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17606.

The product of its digits is 34560, while the sum is 35.

The spelling of 42154261631 in words is "forty-two billion, one hundred fifty-four million, two hundred sixty-one thousand, six hundred thirty-one".