1292379671 has 4 divisors (see below), whose sum is σ = 1409868744. Its totient is φ = 1174890600.

The previous prime is 1292379667. The next prime is 1292379679. The reversal of 1292379671 is 1769732921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1292379671 - 2² = 1292379667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292379679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58744520 + ... + 58744541.

It is an arithmetic number, because the mean of its divisors is an integer number (352467186).

Almost surely, 2^1292379671 is an apocalyptic number.

1292379671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1292379671 is a deficient number, since it is larger than the sum of its proper divisors (117489073).

1292379671 is a wasteful number, since it uses less digits than its factorization.

1292379671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117489072.

The product of its digits is 285768, while the sum is 47.

The square root of 1292379671 is about 35949.6824881667. The cubic root of 1292379671 is about 1089.2561968146.

The spelling of 1292379671 in words is "one billion, two hundred ninety-two million, three hundred seventy-nine thousand, six hundred seventy-one".