137457121 has 8 divisors (see below), whose sum is σ = 146656224. Its totient is φ = 128381760.

The previous prime is 137457113. The next prime is 137457139. The reversal of 137457121 is 121754731.

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

It is a cyclic number.

It is not a de Polignac number, because 137457121 - 2³ = 137457113 is a prime.

It is a super-2 number, since 2×137457121² = 37788920227217282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137457421) 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 7 ways as a sum of consecutive naturals, for example, 28635 + ... + 33088.

It is an arithmetic number, because the mean of its divisors is an integer number (18332028).

Almost surely, 2^137457121 is an apocalyptic number.

It is an amenable number.

137457121 is a deficient number, since it is larger than the sum of its proper divisors (9199103).

137457121 is a wasteful number, since it uses less digits than its factorization.

137457121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61871.

The product of its digits is 5880, while the sum is 31.

The square root of 137457121 is about 11724.2108902902. The cubic root of 137457121 is about 516.0863998603.

The spelling of 137457121 in words is "one hundred thirty-seven million, four hundred fifty-seven thousand, one hundred twenty-one".