705142057 has 4 divisors (see below), whose sum is σ = 705247056. Its totient is φ = 705037060.

The previous prime is 705142049. The next prime is 705142063. The reversal of 705142057 is 750241507.

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 705142057 - 2³ = 705142049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705142357) 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, 41683 + ... + 56104.

It is an arithmetic number, because the mean of its divisors is an integer number (176311764).

Almost surely, 2^705142057 is an apocalyptic number.

It is an amenable number.

705142057 is a deficient number, since it is larger than the sum of its proper divisors (104999).

705142057 is an equidigital number, since it uses as much as digits as its factorization.

705142057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104998.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 705142057 is about 26554.5110480310. The cubic root of 705142057 is about 890.0728202841.

The spelling of 705142057 in words is "seven hundred five million, one hundred forty-two thousand, fifty-seven".