12401157 has 16 divisors (see below), whose sum is σ = 17031168. Its totient is φ = 8022000.

The previous prime is 12401153. The next prime is 12401173. The reversal of 12401157 is 75110421.

It is a happy number.

12401157 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12401157 - 2² = 12401153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12401153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32188 + ... + 32570.

It is an arithmetic number, because the mean of its divisors is an integer number (1064448).

Almost surely, 2^12401157 is an apocalyptic number.

It is an amenable number.

12401157 is a deficient number, since it is larger than the sum of its proper divisors (4630011).

12401157 is a wasteful number, since it uses less digits than its factorization.

12401157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 12401157 is about 3521.5276514604. The cubic root of 12401157 is about 231.4661040984.

Adding to 12401157 its reverse (75110421), we get a palindrome (87511578).

The spelling of 12401157 in words is "twelve million, four hundred one thousand, one hundred fifty-seven".