137724402 has 8 divisors (see below), whose sum is σ = 275448816. Its totient is φ = 45908132.

The previous prime is 137724373. The next prime is 137724409. The reversal of 137724402 is 204427731.

It is a sphenic number, since it is the product of 3 distinct primes.

137724402 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 137724402.

It is not an unprimeable number, because it can be changed into a prime (137724409) 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, 11477028 + ... + 11477039.

It is an arithmetic number, because the mean of its divisors is an integer number (34431102).

Almost surely, 2^137724402 is an apocalyptic number.

137724402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

137724402 is a wasteful number, since it uses less digits than its factorization.

137724402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22954072.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 137724402 is about 11735.6040321749. The cubic root of 137724402 is about 516.4206878133.

It can be divided in two parts, 13 and 7724402, that added together give a triangular number (7724415 = T₃₉₃₀).

The spelling of 137724402 in words is "one hundred thirty-seven million, seven hundred twenty-four thousand, four hundred two".