42166759257 has 24 divisors (see below), whose sum is σ = 72635082624. Its totient is φ = 23047668864.

The previous prime is 42166759237. The next prime is 42166759267. The reversal of 42166759257 is 75295766124.

It is a happy number.

42166759257 is a `hidden beast` number, since 42 + 1 + 6 + 6 + 7 + 592 + 5 + 7 = 666.

It is not a de Polignac number, because 42166759257 - 2¹² = 42166755161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42166759237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14548848 + ... + 14551745.

It is an arithmetic number, because the mean of its divisors is an integer number (3026461776).

Almost surely, 2^42166759257 is an apocalyptic number.

It is an amenable number.

42166759257 is a deficient number, since it is larger than the sum of its proper divisors (30468323367).

42166759257 is a wasteful number, since it uses less digits than its factorization.

42166759257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29100629 (or 29100626 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The spelling of 42166759257 in words is "forty-two billion, one hundred sixty-six million, seven hundred fifty-nine thousand, two hundred fifty-seven".