1427256129801 has 4 divisors (see below), whose sum is σ = 1903008173072. Its totient is φ = 951504086532.

The previous prime is 1427256129773. The next prime is 1427256129811. The reversal of 1427256129801 is 1089216527241.

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 not a de Polignac number, because 1427256129801 - 2⁶ = 1427256129737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1427256129811) 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, 237876021631 + ... + 237876021636.

It is an arithmetic number, because the mean of its divisors is an integer number (475752043268).

Almost surely, 2^{1427256129801} is an apocalyptic number.

It is an amenable number.

1427256129801 is a deficient number, since it is larger than the sum of its proper divisors (475752043271).

1427256129801 is an equidigital number, since it uses as much as digits as its factorization.

1427256129801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475752043270.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 1427256129801 in words is "one trillion, four hundred twenty-seven billion, two hundred fifty-six million, one hundred twenty-nine thousand, eight hundred one".