121739023 has 32 divisors (see below), whose sum is σ = 161879040. Its totient is φ = 88957440.

The previous prime is 121739021. The next prime is 121739027. The reversal of 121739023 is 320937121.

It is a cyclic number.

It is not a de Polignac number, because 121739023 - 2¹ = 121739021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121738982 and 121739000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121739021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50833 + ... + 53173.

It is an arithmetic number, because the mean of its divisors is an integer number (5058720).

Almost surely, 2^121739023 is an apocalyptic number.

121739023 is a deficient number, since it is larger than the sum of its proper divisors (40140017).

121739023 is a wasteful number, since it uses less digits than its factorization.

121739023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 121739023 is about 11033.5408187943. The cubic root of 121739023 is about 495.6136632911.

The spelling of 121739023 in words is "one hundred twenty-one million, seven hundred thirty-nine thousand, twenty-three".