130645402 has 8 divisors (see below), whose sum is σ = 197702676. Its totient is φ = 64744512.

The previous prime is 130645397. The next prime is 130645421. The reversal of 130645402 is 204546031.

It can be written as a sum of positive squares in 2 ways, for example, as 76755121 + 53890281 = 8761^2 + 7341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 288813 + ... + 289264.

Almost surely, 2^130645402 is an apocalyptic number.

130645402 is a deficient number, since it is larger than the sum of its proper divisors (67057274).

130645402 is a wasteful number, since it uses less digits than its factorization.

130645402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578192.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 130645402 is about 11430.0219597339. The cubic root of 130645402 is about 507.4166454542.

The spelling of 130645402 in words is "one hundred thirty million, six hundred forty-five thousand, four hundred two".