121736157 has 8 divisors (see below), whose sum is σ = 165768576. Its totient is φ = 79430592.

The previous prime is 121736149. The next prime is 121736161. The reversal of 121736157 is 751637121.

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

It is not a de Polignac number, because 121736157 - 2³ = 121736149 is a prime.

It is a super-2 number, since 2×121736157² = 29639383842257298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121736107) 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, 431548 + ... + 431829.

It is an arithmetic number, because the mean of its divisors is an integer number (20721072).

Almost surely, 2^121736157 is an apocalyptic number.

It is an amenable number.

121736157 is a deficient number, since it is larger than the sum of its proper divisors (44032419).

121736157 is an equidigital number, since it uses as much as digits as its factorization.

121736157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863427.

The product of its digits is 8820, while the sum is 33.

The square root of 121736157 is about 11033.4109413182. The cubic root of 121736157 is about 495.6097739879.

The spelling of 121736157 in words is "one hundred twenty-one million, seven hundred thirty-six thousand, one hundred fifty-seven".