1297427522 has 16 divisors (see below), whose sum is σ = 2061336600. Its totient is φ = 610341888.

The previous prime is 1297427497. The next prime is 1297427557. The reversal of 1297427522 is 2257247921.

It can be written as a sum of positive squares in 4 ways, for example, as 1265153761 + 32273761 = 35569^2 + 5681^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1297427522.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138854 + ... + 147902.

Almost surely, 2^1297427522 is an apocalyptic number.

1297427522 is a deficient number, since it is larger than the sum of its proper divisors (763909078).

1297427522 is a wasteful number, since it uses less digits than its factorization.

1297427522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13285.

The product of its digits is 141120, while the sum is 41.

The square root of 1297427522 is about 36019.8212377574. The cubic root of 1297427522 is about 1090.6725143100.

The spelling of 1297427522 in words is "one billion, two hundred ninety-seven million, four hundred twenty-seven thousand, five hundred twenty-two".