121154379 has 8 divisors (see below), whose sum is σ = 161642640. Its totient is φ = 80717856.

The previous prime is 121154351. The next prime is 121154381. The reversal of 121154379 is 973451121.

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

It is not a de Polignac number, because 121154379 - 2⁵ = 121154347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121153379) 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, 7092 + ... + 17105.

It is an arithmetic number, because the mean of its divisors is an integer number (20205330).

Almost surely, 2^121154379 is an apocalyptic number.

121154379 is a deficient number, since it is larger than the sum of its proper divisors (40488261).

121154379 is a wasteful number, since it uses less digits than its factorization.

121154379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25869.

The product of its digits is 7560, while the sum is 33.

The square root of 121154379 is about 11007.0149904504. The cubic root of 121154379 is about 494.8190053515.

The spelling of 121154379 in words is "one hundred twenty-one million, one hundred fifty-four thousand, three hundred seventy-nine".