121162139 has 8 divisors (see below), whose sum is σ = 140421888. Its totient is φ = 102390120.

The previous prime is 121162127. The next prime is 121162147. The reversal of 121162139 is 931261121.

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

It is not a de Polignac number, because 121162139 - 2⁴ = 121162123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121162109) 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, 121397 + ... + 122390.

It is an arithmetic number, because the mean of its divisors is an integer number (17552736).

Almost surely, 2^121162139 is an apocalyptic number.

121162139 is a deficient number, since it is larger than the sum of its proper divisors (19259749).

121162139 is an equidigital number, since it uses as much as digits as its factorization.

121162139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243865.

The product of its digits is 648, while the sum is 26.

The square root of 121162139 is about 11007.3674872787. The cubic root of 121162139 is about 494.8295695961.

The spelling of 121162139 in words is "one hundred twenty-one million, one hundred sixty-two thousand, one hundred thirty-nine".