121054405 has 16 divisors (see below), whose sum is σ = 152691840. Its totient is φ = 91954368.

The previous prime is 121054403. The next prime is 121054457. The reversal of 121054405 is 504450121.

It is not a de Polignac number, because 121054405 - 2¹ = 121054403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121054403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12199 + ... + 19771.

It is an arithmetic number, because the mean of its divisors is an integer number (9543240).

Almost surely, 2^121054405 is an apocalyptic number.

It is an amenable number.

121054405 is a deficient number, since it is larger than the sum of its proper divisors (31637435).

121054405 is a wasteful number, since it uses less digits than its factorization.

121054405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7740.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 121054405 is about 11002.4726766305. The cubic root of 121054405 is about 494.6828632138.

The spelling of 121054405 in words is "one hundred twenty-one million, fifty-four thousand, four hundred five".