137840452 has 12 divisors (see below), whose sum is σ = 241796716. Its totient is φ = 68755680.

The previous prime is 137840411. The next prime is 137840453. The reversal of 137840452 is 254048731.

It can be written as a sum of positive squares in 2 ways, for example, as 53494596 + 84345856 = 7314^2 + 9184^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (137840453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39243 + ... + 42610.

Almost surely, 2^137840452 is an apocalyptic number.

It is an amenable number.

137840452 is a deficient number, since it is larger than the sum of its proper divisors (103956264).

137840452 is a wasteful number, since it uses less digits than its factorization.

137840452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82278 (or 82276 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 137840452 is about 11740.5473466956. The cubic root of 137840452 is about 516.5656967219.

The spelling of 137840452 in words is "one hundred thirty-seven million, eight hundred forty thousand, four hundred fifty-two".