136570402 has 4 divisors (see below), whose sum is σ = 204855606. Its totient is φ = 68285200.

The previous prime is 136570397. The next prime is 136570403. The reversal of 136570402 is 204075631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204075631 = 59 ⋅3458909.

It can be written as a sum of positive squares in only one way, i.e., 99980001 + 36590401 = 9999^2 + 6049^2 .

It is not an unprimeable number, because it can be changed into a prime (136570403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34142599 + ... + 34142602.

Almost surely, 2^136570402 is an apocalyptic number.

136570402 is a deficient number, since it is larger than the sum of its proper divisors (68285204).

136570402 is an equidigital number, since it uses as much as digits as its factorization.

136570402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68285203.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 136570402 is about 11686.3339846164. Note that the first 3 decimals coincide. The cubic root of 136570402 is about 514.9742683596.

The spelling of 136570402 in words is "one hundred thirty-six million, five hundred seventy thousand, four hundred two".