137220938 has 8 divisors (see below), whose sum is σ = 211394532. Its totient is φ = 66756096.

The previous prime is 137220931. The next prime is 137220943. The reversal of 137220938 is 839022731.

It can be written as a sum of positive squares in 2 ways, for example, as 137194369 + 26569 = 11713^2 + 163^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 137220898 and 137220907.

It is not an unprimeable number, because it can be changed into a prime (137220931) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 927095 + ... + 927242.

Almost surely, 2^137220938 is an apocalyptic number.

137220938 is a deficient number, since it is larger than the sum of its proper divisors (74173594).

137220938 is a wasteful number, since it uses less digits than its factorization.

137220938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854376.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 137220938 is about 11714.1341122594. The cubic root of 137220938 is about 515.7906452954.

The spelling of 137220938 in words is "one hundred thirty-seven million, two hundred twenty thousand, nine hundred thirty-eight".