12401971 has 4 divisors (see below), whose sum is σ = 12605344. Its totient is φ = 12198600.

The previous prime is 12401969. The next prime is 12401989. The reversal of 12401971 is 17910421.

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

It is a cyclic number.

It is not a de Polignac number, because 12401971 - 2¹ = 12401969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12401941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101595 + ... + 101716.

It is an arithmetic number, because the mean of its divisors is an integer number (3151336).

Almost surely, 2^12401971 is an apocalyptic number.

12401971 is a deficient number, since it is larger than the sum of its proper divisors (203373).

12401971 is an equidigital number, since it uses as much as digits as its factorization.

12401971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203372.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 12401971 is about 3521.6432244053. The cubic root of 12401971 is about 231.4711683917.

The spelling of 12401971 in words is "twelve million, four hundred one thousand, nine hundred seventy-one".