40402134634 has 12 divisors (see below), whose sum is σ = 61012731654. Its totient is φ = 20065467632.

The previous prime is 40402134629. The next prime is 40402134659. The reversal of 40402134634 is 43643120404.

It can be written as a sum of positive squares in 3 ways, for example, as 24487555225 + 15914579409 = 156485^2 + 126153^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40402134596 and 40402134605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 410557 + ... + 499360.

Almost surely, 2^40402134634 is an apocalyptic number.

40402134634 is a deficient number, since it is larger than the sum of its proper divisors (20610597020).

40402134634 is an equidigital number, since it uses as much as digits as its factorization.

40402134634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910217 (or 910068 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The spelling of 40402134634 in words is "forty billion, four hundred two million, one hundred thirty-four thousand, six hundred thirty-four".