1292422839 has 8 divisors (see below), whose sum is σ = 1769804400. Its totient is φ = 838328256.

The previous prime is 1292422811. The next prime is 1292422843. The reversal of 1292422839 is 9382242921.

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

It is not a de Polignac number, because 1292422839 - 2⁷ = 1292422711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1292422839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292422849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5821614 + ... + 5821835.

It is an arithmetic number, because the mean of its divisors is an integer number (221225550).

Almost surely, 2^1292422839 is an apocalyptic number.

1292422839 is a deficient number, since it is larger than the sum of its proper divisors (477381561).

1292422839 is a wasteful number, since it uses less digits than its factorization.

1292422839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11643489.

The product of its digits is 124416, while the sum is 42.

The square root of 1292422839 is about 35950.2828778857. The cubic root of 1292422839 is about 1089.2683244396.

The spelling of 1292422839 in words is "one billion, two hundred ninety-two million, four hundred twenty-two thousand, eight hundred thirty-nine".