1290540044 has 12 divisors (see below), whose sum is σ = 2331298368. Its totient is φ = 624454800.

The previous prime is 1290540001. The next prime is 1290540071. The reversal of 1290540044 is 4400450921.

It is a junction number, because it is equal to n+sod(n) for n = 1290539989 and 1290540016.

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, 5203667 + ... + 5203914.

It is an arithmetic number, because the mean of its divisors is an integer number (194274864).

Almost surely, 2^1290540044 is an apocalyptic number.

It is an amenable number.

1290540044 is a deficient number, since it is larger than the sum of its proper divisors (1040758324).

1290540044 is a wasteful number, since it uses less digits than its factorization.

1290540044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10407616 (or 10407614 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1290540044 is about 35924.0872396224. The cubic root of 1290540044 is about 1088.7391205294.

Adding to 1290540044 its reverse (4400450921), we get a palindrome (5690990965).

The spelling of 1290540044 in words is "one billion, two hundred ninety million, five hundred forty thousand, forty-four".