12901047 has 4 divisors (see below), whose sum is σ = 17201400. Its totient is φ = 8600696.

The previous prime is 12901043. The next prime is 12901081. The reversal of 12901047 is 74010921.

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 12901047 - 2² = 12901043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12901043) 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, 2150172 + ... + 2150177.

It is an arithmetic number, because the mean of its divisors is an integer number (4300350).

Almost surely, 2^12901047 is an apocalyptic number.

12901047 is a deficient number, since it is larger than the sum of its proper divisors (4300353).

12901047 is an equidigital number, since it uses as much as digits as its factorization.

12901047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300352.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 12901047 is about 3591.8027507089. The cubic root of 12901047 is about 234.5353547257.

Adding to 12901047 its reverse (74010921), we get a palindrome (86911968).

The spelling of 12901047 in words is "twelve million, nine hundred one thousand, forty-seven".