121060405 has 4 divisors (see below), whose sum is σ = 145272492. Its totient is φ = 96848320.

The previous prime is 121060393. The next prime is 121060439. The reversal of 121060405 is 504060121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504060121 = 787 ⋅640483.

It can be written as a sum of positive squares in 2 ways, for example, as 27783441 + 93276964 = 5271^2 + 9658^2 .

It is not a de Polignac number, because 121060405 - 2¹⁵ = 121027637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12106036 + ... + 12106045.

It is an arithmetic number, because the mean of its divisors is an integer number (36318123).

Almost surely, 2^121060405 is an apocalyptic number.

It is an amenable number.

121060405 is a deficient number, since it is larger than the sum of its proper divisors (24212087).

121060405 is an equidigital number, since it uses as much as digits as its factorization.

121060405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24212086.

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

The square root of 121060405 is about 11002.7453392324. The cubic root of 121060405 is about 494.6910359803.

The spelling of 121060405 in words is "one hundred twenty-one million, sixty thousand, four hundred five".