122537921 has 8 divisors (see below), whose sum is σ = 141541344. Its totient is φ = 104845120.

The previous prime is 122537911. The next prime is 122537923. The reversal of 122537921 is 129735221.

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

It is not a de Polignac number, because 122537921 - 2¹⁴ = 122521537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122537923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327455 + ... + 327828.

It is an arithmetic number, because the mean of its divisors is an integer number (17692668).

Almost surely, 2^122537921 is an apocalyptic number.

122537921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122537921 is a deficient number, since it is larger than the sum of its proper divisors (19003423).

122537921 is a wasteful number, since it uses less digits than its factorization.

122537921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655311.

The product of its digits is 7560, while the sum is 32.

The square root of 122537921 is about 11069.6847741930. The cubic root of 122537921 is about 496.6954358263.

The spelling of 122537921 in words is "one hundred twenty-two million, five hundred thirty-seven thousand, nine hundred twenty-one".