136842290 has 32 divisors (see below), whose sum is σ = 270282096. Its totient is φ = 49570560.

The previous prime is 136842283. The next prime is 136842331. The reversal of 136842290 is 92248631.

It can be written as a sum of positive squares in 8 ways, for example, as 11648569 + 125193721 = 3413^2 + 11189^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 136842290.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3041 + ... + 16820.

Almost surely, 2^136842290 is an apocalyptic number.

136842290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136842290 is a deficient number, since it is larger than the sum of its proper divisors (133439806).

136842290 is a wasteful number, since it uses less digits than its factorization.

136842290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19934.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 136842290 is about 11697.9609334277. The cubic root of 136842290 is about 515.3157833317.

The spelling of 136842290 in words is "one hundred thirty-six million, eight hundred forty-two thousand, two hundred ninety".