120738121 has 4 divisors (see below), whose sum is σ = 137986432. Its totient is φ = 103489812.

The previous prime is 120738091. The next prime is 120738133. The reversal of 120738121 is 121837021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120738121 - 2¹¹ = 120736073 is a prime.

It is a super-2 number, since 2×120738121² = 29155387725221282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120738151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8624145 + ... + 8624158.

It is an arithmetic number, because the mean of its divisors is an integer number (34496608).

Almost surely, 2^120738121 is an apocalyptic number.

It is an amenable number.

120738121 is a deficient number, since it is larger than the sum of its proper divisors (17248311).

120738121 is an equidigital number, since it uses as much as digits as its factorization.

120738121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17248310.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 120738121 is about 10988.0899614082. The cubic root of 120738121 is about 494.2516611266.

The spelling of 120738121 in words is "one hundred twenty million, seven hundred thirty-eight thousand, one hundred twenty-one".