121604477 has 4 divisors (see below), whose sum is σ = 121682880. Its totient is φ = 121526076.

The previous prime is 121604471. The next prime is 121604479. The reversal of 121604477 is 774406121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121604477 - 2²⁰ = 120555901 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 (121604471) 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, 36827 + ... + 39992.

It is an arithmetic number, because the mean of its divisors is an integer number (30420720).

Almost surely, 2^121604477 is an apocalyptic number.

It is an amenable number.

121604477 is a deficient number, since it is larger than the sum of its proper divisors (78403).

121604477 is an equidigital number, since it uses as much as digits as its factorization.

121604477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78402.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 121604477 is about 11027.4419971270. The cubic root of 121604477 is about 495.4310118691.

It can be divided in two parts, 1216044 and 77, that added together give a palindrome (1216121).

The spelling of 121604477 in words is "one hundred twenty-one million, six hundred four thousand, four hundred seventy-seven".