1279328141 has 24 divisors (see below), whose sum is σ = 1586390400. Its totient is φ = 1010183616.

The previous prime is 1279328137. The next prime is 1279328143. The reversal of 1279328141 is 1418239721.

It is a happy number.

It is not a de Polignac number, because 1279328141 - 2² = 1279328137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1279328095 and 1279328104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279328143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 913760 + ... + 915158.

It is an arithmetic number, because the mean of its divisors is an integer number (66099600).

Almost surely, 2^1279328141 is an apocalyptic number.

It is an amenable number.

1279328141 is a deficient number, since it is larger than the sum of its proper divisors (307062259).

1279328141 is a wasteful number, since it uses less digits than its factorization.

1279328141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205 (or 2192 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 1279328141 is about 35767.6968925873. The cubic root of 1279328141 is about 1085.5770440255.

The spelling of 1279328141 in words is "one billion, two hundred seventy-nine million, three hundred twenty-eight thousand, one hundred forty-one".