12779142 has 16 divisors (see below), whose sum is σ = 25593840. Its totient is φ = 4253792.

The previous prime is 12779141. The next prime is 12779147. The reversal of 12779142 is 24197721.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12779141) 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 7 ways as a sum of consecutive naturals, for example, 6508 + ... + 8240.

It is an arithmetic number, because the mean of its divisors is an integer number (1599615).

Almost surely, 2^12779142 is an apocalyptic number.

12779142 is an abundant number, since it is smaller than the sum of its proper divisors (12814698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12779142 is a wasteful number, since it uses less digits than its factorization.

12779142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967.

The product of its digits is 7056, while the sum is 33.

The square root of 12779142 is about 3574.7925813955. The cubic root of 12779142 is about 233.7942892239.

It can be divided in two parts, 12779 and 142, that added together give a palindrome (12921).

The spelling of 12779142 in words is "twelve million, seven hundred seventy-nine thousand, one hundred forty-two".