12354921 has 12 divisors (see below), whose sum is σ = 18785520. Its totient is φ = 7803000.

The previous prime is 12354919. The next prime is 12354943. The reversal of 12354921 is 12945321.

12354921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12354921 - 2¹ = 12354919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12354961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35955 + ... + 36296.

It is an arithmetic number, because the mean of its divisors is an integer number (1565460).

Almost surely, 2^12354921 is an apocalyptic number.

It is an amenable number.

12354921 is a deficient number, since it is larger than the sum of its proper divisors (6430599).

12354921 is a wasteful number, since it uses less digits than its factorization.

12354921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72276 (or 72273 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 12354921 is about 3514.9567564908. The cubic root of 12354921 is about 231.1780827254.

The spelling of 12354921 in words is "twelve million, three hundred fifty-four thousand, nine hundred twenty-one".