136942580 has 24 divisors (see below), whose sum is σ = 289047528. Its totient is φ = 54497408.

The previous prime is 136942577. The next prime is 136942591. The reversal of 136942580 is 85249631.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32330596 + 104611984 = 5686^2 + 10228^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13439 + ... + 21318.

It is an arithmetic number, because the mean of its divisors is an integer number (12043647).

Almost surely, 2^136942580 is an apocalyptic number.

136942580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136942580 is an abundant number, since it is smaller than the sum of its proper divisors (152104948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136942580 is a wasteful number, since it uses less digits than its factorization.

136942580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34963 (or 34961 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 136942580 is about 11702.2467928172. The cubic root of 136942580 is about 515.4416420839.

The spelling of 136942580 in words is "one hundred thirty-six million, nine hundred forty-two thousand, five hundred eighty".