1296042464 has 36 divisors (see below), whose sum is σ = 2710525104. Its totient is φ = 609897984.

The previous prime is 1296042457. The next prime is 1296042467. The reversal of 1296042464 is 4642406921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296042467) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60824 + ... + 79319.

It is an arithmetic number, because the mean of its divisors is an integer number (75292364).

Almost surely, 2^1296042464 is an apocalyptic number.

It is an amenable number.

1296042464 is an abundant number, since it is smaller than the sum of its proper divisors (1414482640).

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

1296042464 is a wasteful number, since it uses less digits than its factorization.

1296042464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140187 (or 140162 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 1296042464 is about 36000.5897729468. The cubic root of 1296042464 is about 1090.2842633175.

The spelling of 1296042464 in words is "one billion, two hundred ninety-six million, forty-two thousand, four hundred sixty-four".