121845427 has 6 divisors (see below), whose sum is σ = 133929404. Its totient is φ = 110768460.

The previous prime is 121845419. The next prime is 121845439. The reversal of 121845427 is 724548121.

It is not a de Polignac number, because 121845427 - 2³ = 121845419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121845392 and 121845401.

It is not an unprimeable number, because it can be changed into a prime (121845127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 503373 + ... + 503614.

Almost surely, 2^121845427 is an apocalyptic number.

121845427 is a deficient number, since it is larger than the sum of its proper divisors (12083977).

121845427 is a wasteful number, since it uses less digits than its factorization.

121845427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007009 (or 1006998 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 121845427 is about 11038.3616084997. The cubic root of 121845427 is about 495.7580155791.

It can be divided in two parts, 121 and 845427, that added together give a palindrome (845548).

The spelling of 121845427 in words is "one hundred twenty-one million, eight hundred forty-five thousand, four hundred twenty-seven".