136942785 has 128 divisors (see below), whose sum is σ = 304128000. Its totient is φ = 57044736.

The previous prime is 136942783. The next prime is 136942801. The reversal of 136942785 is 587249631.

It is not a de Polignac number, because 136942785 - 2¹ = 136942783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 136942785.

It is not an unprimeable number, because it can be changed into a prime (136942783) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 520564 + ... + 520826.

It is an arithmetic number, because the mean of its divisors is an integer number (2376000).

Almost surely, 2^136942785 is an apocalyptic number.

136942785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136942785 is an abundant number, since it is smaller than the sum of its proper divisors (167185215).

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

136942785 is a wasteful number, since it uses less digits than its factorization.

136942785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 326 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 136942785 is about 11702.2555518156. The cubic root of 136942785 is about 515.4418992853.

The spelling of 136942785 in words is "one hundred thirty-six million, nine hundred forty-two thousand, seven hundred eighty-five".