137321872 has 10 divisors (see below), whose sum is σ = 266061158. Its totient is φ = 68660928.

The previous prime is 137321861. The next prime is 137321897. The reversal of 137321872 is 278123731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 87534736 + 49787136 = 9356^2 + 7056^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4291293 + ... + 4291324.

Almost surely, 2^137321872 is an apocalyptic number.

It is an amenable number.

137321872 is a deficient number, since it is larger than the sum of its proper divisors (128739286).

137321872 is an equidigital number, since it uses as much as digits as its factorization.

137321872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8582625 (or 8582619 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 137321872 is about 11718.4415346069. The cubic root of 137321872 is about 515.9170789975.

The spelling of 137321872 in words is "one hundred thirty-seven million, three hundred twenty-one thousand, eight hundred seventy-two".