42257385783 has 6 divisors (see below), whose sum is σ = 61038446144. Its totient is φ = 28171590516.

The previous prime is 42257385749. The next prime is 42257385811. The reversal of 42257385783 is 38758375224.

42257385783 is a `hidden beast` number, since 4 + 2 + 257 + 385 + 7 + 8 + 3 = 666.

It is not a de Polignac number, because 42257385783 - 2⁶ = 42257385719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42257385713) 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, 2347632535 + ... + 2347632552.

Almost surely, 2^42257385783 is an apocalyptic number.

42257385783 is a deficient number, since it is larger than the sum of its proper divisors (18781060361).

42257385783 is a wasteful number, since it uses less digits than its factorization.

42257385783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4695265093 (or 4695265090 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 54.

The spelling of 42257385783 in words is "forty-two billion, two hundred fifty-seven million, three hundred eighty-five thousand, seven hundred eighty-three".