136942280 has 16 divisors (see below), whose sum is σ = 308120220. Its totient is φ = 54776896.

The previous prime is 136942279. The next prime is 136942297. The reversal of 136942280 is 82249631.

It can be written as a sum of positive squares in 2 ways, for example, as 136936804 + 5476 = 11702^2 + 74^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 136942280.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711739 + ... + 1711818.

Almost surely, 2^136942280 is an apocalyptic number.

136942280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136942280 is an abundant number, since it is smaller than the sum of its proper divisors (171177940).

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

136942280 is a wasteful number, since it uses less digits than its factorization.

136942280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423568 (or 3423564 counting only the distinct ones).

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

The square root of 136942280 is about 11702.2339747588. The cubic root of 136942280 is about 515.4412656911.

The spelling of 136942280 in words is "one hundred thirty-six million, nine hundred forty-two thousand, two hundred eighty".