12621454 has 4 divisors (see below), whose sum is σ = 18932184. Its totient is φ = 6310726.

The previous prime is 12621451. The next prime is 12621487. The reversal of 12621454 is 45412621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12621454² = 318602202148232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12621451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3155362 + ... + 3155365.

It is an arithmetic number, because the mean of its divisors is an integer number (4733046).

Almost surely, 2^12621454 is an apocalyptic number.

12621454 is a deficient number, since it is larger than the sum of its proper divisors (6310730).

12621454 is an equidigital number, since it uses as much as digits as its factorization.

12621454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6310729.

The product of its digits is 1920, while the sum is 25.

The square root of 12621454 is about 3552.6685744662. The cubic root of 12621454 is about 232.8286730113.

The spelling of 12621454 in words is "twelve million, six hundred twenty-one thousand, four hundred fifty-four".