2842942257 has 6 divisors (see below), whose sum is σ = 4106472162. Its totient is φ = 1895294832.

The previous prime is 2842942229. The next prime is 2842942309. The reversal of 2842942257 is 7522492482.

It can be written as a sum of positive squares in only one way, i.e., 2500100001 + 342842256 = 50001^2 + 18516^2 .

It is not a de Polignac number, because 2842942257 - 2⁸ = 2842942001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2842942757) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157941228 + ... + 157941245.

It is an arithmetic number, because the mean of its divisors is an integer number (684412027).

Almost surely, 2^2842942257 is an apocalyptic number.

It is an amenable number.

2842942257 is a deficient number, since it is larger than the sum of its proper divisors (1263529905).

2842942257 is a wasteful number, since it uses less digits than its factorization.

2842942257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315882479 (or 315882476 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 2842942257 is about 53319.2484661965. The cubic root of 2842942257 is about 1416.6286245163.

The spelling of 2842942257 in words is "two billion, eight hundred forty-two million, nine hundred forty-two thousand, two hundred fifty-seven".