1290926427 has 16 divisors (see below), whose sum is σ = 1974447360. Its totient is φ = 734926752.

The previous prime is 1290926419. The next prime is 1290926447. The reversal of 1290926427 is 7246290921.

It is not a de Polignac number, because 1290926427 - 2³ = 1290926419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1290926447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108613 + ... + 119910.

It is an arithmetic number, because the mean of its divisors is an integer number (123402960).

Almost surely, 2^1290926427 is an apocalyptic number.

1290926427 is a deficient number, since it is larger than the sum of its proper divisors (683520933).

1290926427 is a wasteful number, since it uses less digits than its factorization.

1290926427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228802.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 1290926427 is about 35929.4646077561. The cubic root of 1290926427 is about 1088.8477645331.

The spelling of 1290926427 in words is "one billion, two hundred ninety million, nine hundred twenty-six thousand, four hundred twenty-seven".