137742786 has 24 divisors (see below), whose sum is σ = 306510204. Its totient is φ = 44673120.

The previous prime is 137742763. The next prime is 137742793. The reversal of 137742786 is 687247731.

137742786 is a `hidden beast` number, since 1 + 377 + 4 + 278 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 132365025 + 5377761 = 11505^2 + 2319^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102745 + ... + 104076.

Almost surely, 2^137742786 is an apocalyptic number.

137742786 is an abundant number, since it is smaller than the sum of its proper divisors (168767418).

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

137742786 is a wasteful number, since it uses less digits than its factorization.

137742786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206866 (or 206863 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 137742786 is about 11736.3872635492. The cubic root of 137742786 is about 516.4436647522.

The spelling of 137742786 in words is "one hundred thirty-seven million, seven hundred forty-two thousand, seven hundred eighty-six".