121359139 has 8 divisors (see below), whose sum is σ = 135621360. Its totient is φ = 107635200.

The previous prime is 121359127. The next prime is 121359143. The reversal of 121359139 is 931953121.

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 121359139 - 2⁷ = 121359011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121359169) 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, 134094 + ... + 134995.

It is an arithmetic number, because the mean of its divisors is an integer number (16952670).

Almost surely, 2^121359139 is an apocalyptic number.

121359139 is a deficient number, since it is larger than the sum of its proper divisors (14262221).

121359139 is a wasteful number, since it uses less digits than its factorization.

121359139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269141.

The product of its digits is 7290, while the sum is 34.

The square root of 121359139 is about 11016.3124047932. The cubic root of 121359139 is about 495.0976088845.

The spelling of 121359139 in words is "one hundred twenty-one million, three hundred fifty-nine thousand, one hundred thirty-nine".