12961142 has 8 divisors (see below), whose sum is σ = 19457256. Its totient is φ = 6475392.

The previous prime is 12961141. The next prime is 12961147. The reversal of 12961142 is 24116921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12961141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2693 + ... + 5759.

It is an arithmetic number, because the mean of its divisors is an integer number (2432157).

Almost surely, 2^12961142 is an apocalyptic number.

12961142 is a deficient number, since it is larger than the sum of its proper divisors (6496114).

12961142 is a wasteful number, since it uses less digits than its factorization.

12961142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5182.

The product of its digits is 864, while the sum is 26.

The square root of 12961142 is about 3600.1586076172. The cubic root of 12961142 is about 234.8989576176.

The spelling of 12961142 in words is "twelve million, nine hundred sixty-one thousand, one hundred forty-two".