121154023 has 4 divisors (see below), whose sum is σ = 122962360. Its totient is φ = 119345688.

The previous prime is 121153999. The next prime is 121154071. The reversal of 121154023 is 320451121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121154023 - 2²⁵ = 87599591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121154123) 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, 904068 + ... + 904201.

It is an arithmetic number, because the mean of its divisors is an integer number (30740590).

Almost surely, 2^121154023 is an apocalyptic number.

121154023 is a deficient number, since it is larger than the sum of its proper divisors (1808337).

121154023 is an equidigital number, since it uses as much as digits as its factorization.

121154023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808336.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 121154023 is about 11006.9988189333. The cubic root of 121154023 is about 494.8185206923.

The spelling of 121154023 in words is "one hundred twenty-one million, one hundred fifty-four thousand, twenty-three".