1259428171 has 4 divisors (see below), whose sum is σ = 1259527752. Its totient is φ = 1259328592.

The previous prime is 1259428147. The next prime is 1259428207. The reversal of 1259428171 is 1718249521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1718249521 = 2341 ⋅733981.

It is a cyclic number.

It is not a de Polignac number, because 1259428171 - 2²³ = 1251039563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1259428571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27490 + ... + 57223.

It is an arithmetic number, because the mean of its divisors is an integer number (314881938).

Almost surely, 2^1259428171 is an apocalyptic number.

1259428171 is a deficient number, since it is larger than the sum of its proper divisors (99581).

1259428171 is an equidigital number, since it uses as much as digits as its factorization.

1259428171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99580.

The product of its digits is 40320, while the sum is 40.

The square root of 1259428171 is about 35488.4230559770. The cubic root of 1259428171 is about 1079.9188813673.

The spelling of 1259428171 in words is "one billion, two hundred fifty-nine million, four hundred twenty-eight thousand, one hundred seventy-one".