12402691 has 16 divisors (see below), whose sum is σ = 14826240. Its totient is φ = 10150560.

The previous prime is 12402679. The next prime is 12402713. The reversal of 12402691 is 19620421.

12402691 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12402691 - 2⁹ = 12402179 is a prime.

It is a pancake number, because a pancake can be divided into 12402691 parts by 4980 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12402601) 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, 21436 + ... + 22006.

It is an arithmetic number, because the mean of its divisors is an integer number (926640).

Almost surely, 2^12402691 is an apocalyptic number.

12402691 is a deficient number, since it is larger than the sum of its proper divisors (2423549).

12402691 is a wasteful number, since it uses less digits than its factorization.

12402691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 12402691 is about 3521.7454479278. The cubic root of 12402691 is about 231.4756476801.

The spelling of 12402691 in words is "twelve million, four hundred two thousand, six hundred ninety-one".