12906057 has 4 divisors (see below), whose sum is σ = 17208080. Its totient is φ = 8604036.

The previous prime is 12906053. The next prime is 12906067. The reversal of 12906057 is 75060921.

12906057 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 a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12906057 - 2² = 12906053 is a prime.

It is the 3593-rd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12906053) by changing a digit.

It is a nontrivial repunit in base 3592.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2151007 + ... + 2151012.

It is an arithmetic number, because the mean of its divisors is an integer number (4302020).

Almost surely, 2^12906057 is an apocalyptic number.

It is an amenable number.

12906057 is a deficient number, since it is larger than the sum of its proper divisors (4302023).

12906057 is an equidigital number, since it uses as much as digits as its factorization.

12906057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302022.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 12906057 is about 3592.5001043841. The cubic root of 12906057 is about 234.5657106613.

Adding to 12906057 its reverse (75060921), we get a palindrome (87966978).

The spelling of 12906057 in words is "twelve million, nine hundred six thousand, fifty-seven".