134187905402 has 16 divisors (see below), whose sum is σ = 210225676320. Its totient is φ = 64174149648.

The previous prime is 134187905387. The next prime is 134187905431. The reversal of 134187905402 is 204509781431.

It is a super-2 number, since 2×134187905402² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15363008 + ... + 15371739.

It is an arithmetic number, because the mean of its divisors is an integer number (13139104770).

Almost surely, 2^134187905402 is an apocalyptic number.

134187905402 is a deficient number, since it is larger than the sum of its proper divisors (76037770918).

134187905402 is a wasteful number, since it uses less digits than its factorization.

134187905402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30734845.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 134187905402 in words is "one hundred thirty-four billion, one hundred eighty-seven million, nine hundred five thousand, four hundred two".