121053405 has 32 divisors (see below), whose sum is σ = 211880448. Its totient is φ = 58529600.

The previous prime is 121053371. The next prime is 121053407. The reversal of 121053405 is 504350121.

It is not a de Polignac number, because 121053405 - 2²⁵ = 87498973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121053407) 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, 76270 + ... + 77840.

It is an arithmetic number, because the mean of its divisors is an integer number (6621264).

Almost surely, 2^121053405 is an apocalyptic number.

121053405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121053405 is a deficient number, since it is larger than the sum of its proper divisors (90827043).

121053405 is a wasteful number, since it uses less digits than its factorization.

121053405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 121053405 is about 11002.4272322065. The cubic root of 121053405 is about 494.6815010599.

It can be divided in two parts, 1210 and 53405, that added together give a triangular number (54615 = T₃₃₀).

The spelling of 121053405 in words is "one hundred twenty-one million, fifty-three thousand, four hundred five".