1290426544 has 20 divisors (see below), whose sum is σ = 2727492840. Its totient is φ = 586557440.

The previous prime is 1290426509. The next prime is 1290426551. The reversal of 1290426544 is 4456240921.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3665809 + ... + 3666160.

It is an arithmetic number, because the mean of its divisors is an integer number (136374642).

Almost surely, 2^1290426544 is an apocalyptic number.

It is an amenable number.

1290426544 is an abundant number, since it is smaller than the sum of its proper divisors (1437066296).

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

1290426544 is a wasteful number, since it uses less digits than its factorization.

1290426544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331988 (or 7331982 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 1290426544 is about 35922.5074848625. The cubic root of 1290426544 is about 1088.7072022345.

The spelling of 1290426544 in words is "one billion, two hundred ninety million, four hundred twenty-six thousand, five hundred forty-four".