1279120192 has 56 divisors (see below), whose sum is σ = 2979302144. Its totient is φ = 533371392.

The previous prime is 1279120189. The next prime is 1279120201. The reversal of 1279120192 is 2910219721.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×1279120192² = 3272296931164233728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22008 + ... + 55159.

It is an arithmetic number, because the mean of its divisors is an integer number (53201824).

Almost surely, 2^1279120192 is an apocalyptic number.

It is an amenable number.

1279120192 is an abundant number, since it is smaller than the sum of its proper divisors (1700181952).

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

1279120192 is an equidigital number, since it uses as much as digits as its factorization.

1279120192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77223 (or 77213 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 1279120192 is about 35764.7898358148. The cubic root of 1279120192 is about 1085.5182222929.

The spelling of 1279120192 in words is "one billion, two hundred seventy-nine million, one hundred twenty thousand, one hundred ninety-two".