1290860255 has 8 divisors (see below), whose sum is σ = 1590898272. Its totient is φ = 1004777568.

The previous prime is 1290860227. The next prime is 1290860261. The reversal of 1290860255 is 5520680921.

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

It is a cyclic number.

It is not a de Polignac number, because 1290860255 - 2¹⁰ = 1290859231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3488627 + ... + 3488996.

It is an arithmetic number, because the mean of its divisors is an integer number (198862284).

Almost surely, 2^1290860255 is an apocalyptic number.

1290860255 is a deficient number, since it is larger than the sum of its proper divisors (300038017).

1290860255 is an equidigital number, since it uses as much as digits as its factorization.

1290860255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6977665.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 1290860255 is about 35928.5437361438. The cubic root of 1290860255 is about 1088.8291596863.

The spelling of 1290860255 in words is "one billion, two hundred ninety million, eight hundred sixty thousand, two hundred fifty-five".