137321402 has 8 divisors (see below), whose sum is σ = 207486036. Its totient is φ = 68159392.

The previous prime is 137321389. The next prime is 137321419. The reversal of 137321402 is 204123731.

It can be written as a sum of positive squares in 2 ways, for example, as 129709321 + 7612081 = 11389^2 + 2759^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250313 + ... + 250860.

Almost surely, 2^137321402 is an apocalyptic number.

137321402 is a deficient number, since it is larger than the sum of its proper divisors (70164634).

137321402 is a wasteful number, since it uses less digits than its factorization.

137321402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501312.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 137321402 is about 11718.4214807285. The cubic root of 137321402 is about 515.9164904015.

The spelling of 137321402 in words is "one hundred thirty-seven million, three hundred twenty-one thousand, four hundred two".