129998602 has 4 divisors (see below), whose sum is σ = 194997906. Its totient is φ = 64999300.

The previous prime is 129998581. The next prime is 129998623. The reversal of 129998602 is 206899921.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (129998581) and next prime (129998623).

It can be written as a sum of positive squares in only one way, i.e., 129481641 + 516961 = 11379^2 + 719^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32499649 + ... + 32499652.

Almost surely, 2^129998602 is an apocalyptic number.

129998602 is a deficient number, since it is larger than the sum of its proper divisors (64999304).

129998602 is an equidigital number, since it uses as much as digits as its factorization.

129998602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64999303.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 129998602 is about 11401.6929444710. The cubic root of 129998602 is about 506.5778860102.

The spelling of 129998602 in words is "one hundred twenty-nine million, nine hundred ninety-eight thousand, six hundred two".