1270842457 has 4 divisors (see below), whose sum is σ = 1277228800. Its totient is φ = 1264456116.

The previous prime is 1270842439. The next prime is 1270842467. The reversal of 1270842457 is 7542480721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1270842457 - 2¹⁵ = 1270809689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1270842467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3192873 + ... + 3193270.

It is an arithmetic number, because the mean of its divisors is an integer number (319307200).

Almost surely, 2^1270842457 is an apocalyptic number.

It is an amenable number.

1270842457 is a deficient number, since it is larger than the sum of its proper divisors (6386343).

1270842457 is an equidigital number, since it uses as much as digits as its factorization.

1270842457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386342.

The product of its (nonzero) digits is 125440, while the sum is 40.

The square root of 1270842457 is about 35648.8773596028. The cubic root of 1270842457 is about 1083.1715349579.

The spelling of 1270842457 in words is "one billion, two hundred seventy million, eight hundred forty-two thousand, four hundred fifty-seven".