137240745 has 16 divisors (see below), whose sum is σ = 232502400. Its totient is φ = 68889344.

The previous prime is 137240737. The next prime is 137240783. The reversal of 137240745 is 547042731.

It is a cyclic number.

It is not a de Polignac number, because 137240745 - 2³ = 137240737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268845 + ... + 269354.

It is an arithmetic number, because the mean of its divisors is an integer number (14531400).

Almost surely, 2^137240745 is an apocalyptic number.

137240745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137240745 is a deficient number, since it is larger than the sum of its proper divisors (95261655).

137240745 is a wasteful number, since it uses less digits than its factorization.

137240745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538224.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 137240745 is about 11714.9795134264. The cubic root of 137240745 is about 515.8154611725.

The spelling of 137240745 in words is "one hundred thirty-seven million, two hundred forty thousand, seven hundred forty-five".