12442775 has 6 divisors (see below), whose sum is σ = 15429072. Its totient is φ = 9954200.

The previous prime is 12442763. The next prime is 12442813. The reversal of 12442775 is 57724421.

It is not a de Polignac number, because 12442775 - 2¹⁸ = 12180631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 248831 + ... + 248880.

It is an arithmetic number, because the mean of its divisors is an integer number (2571512).

Almost surely, 2^12442775 is an apocalyptic number.

12442775 is a deficient number, since it is larger than the sum of its proper divisors (2986297).

12442775 is an equidigital number, since it uses as much as digits as its factorization.

12442775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497721 (or 497716 counting only the distinct ones).

The product of its digits is 15680, while the sum is 32.

The square root of 12442775 is about 3527.4317853078. The cubic root of 12442775 is about 231.7247466361.

The spelling of 12442775 in words is "twelve million, four hundred forty-two thousand, seven hundred seventy-five".