121604423 has 2 divisors, whose sum is σ = 121604424. Its totient is φ = 121604422.

The previous prime is 121604411. The next prime is 121604437. The reversal of 121604423 is 324406121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121604423 - 2⁶ = 121604359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121634423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60802211 + 60802212.

It is an arithmetic number, because the mean of its divisors is an integer number (60802212).

Almost surely, 2^121604423 is an apocalyptic number.

121604423 is a deficient number, since it is larger than the sum of its proper divisors (1).

121604423 is an equidigital number, since it uses as much as digits as its factorization.

121604423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 121604423 is about 11027.4395486894. The cubic root of 121604423 is about 495.4309385349.

The spelling of 121604423 in words is "one hundred twenty-one million, six hundred four thousand, four hundred twenty-three".