121274157 has 8 divisors (see below), whose sum is σ = 163269184. Its totient is φ = 80064288.

The previous prime is 121274099. The next prime is 121274171. The reversal of 121274157 is 751472121.

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

It is not a de Polignac number, because 121274157 - 2¹⁶ = 121208621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121274057) 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, 195928 + ... + 196545.

It is an arithmetic number, because the mean of its divisors is an integer number (20408648).

Almost surely, 2^121274157 is an apocalyptic number.

It is an amenable number.

121274157 is a deficient number, since it is larger than the sum of its proper divisors (41995027).

121274157 is a wasteful number, since it uses less digits than its factorization.

121274157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392579.

The product of its digits is 3920, while the sum is 30.

The square root of 121274157 is about 11012.4546310076. The cubic root of 121274157 is about 494.9820175081.

The spelling of 121274157 in words is "one hundred twenty-one million, two hundred seventy-four thousand, one hundred fifty-seven".