136240542 has 20 divisors (see below), whose sum is σ = 305280096. Its totient is φ = 45413460.

The previous prime is 136240513. The next prime is 136240553. The reversal of 136240542 is 245042631.

It is a super-2 number, since 2×136240542² = 37122970568907528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 420334 + ... + 420657.

Almost surely, 2^136240542 is an apocalyptic number.

136240542 is an abundant number, since it is smaller than the sum of its proper divisors (169039554).

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

136240542 is an equidigital number, since it uses as much as digits as its factorization.

136240542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841005 (or 840996 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 136240542 is about 11672.2123866900. The cubic root of 136240542 is about 514.5593264299.

The spelling of 136240542 in words is "one hundred thirty-six million, two hundred forty thousand, five hundred forty-two".