42159247 has 6 divisors (see below), whose sum is σ = 45651912. Its totient is φ = 38916072.

The previous prime is 42159223. The next prime is 42159251. The reversal of 42159247 is 74295124.

It is not a de Polignac number, because 42159247 - 2¹⁹ = 41634959 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 (42159547) 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, 124563 + ... + 124900.

It is an arithmetic number, because the mean of its divisors is an integer number (7608652).

Almost surely, 2^42159247 is an apocalyptic number.

42159247 is a deficient number, since it is larger than the sum of its proper divisors (3492665).

42159247 is a wasteful number, since it uses less digits than its factorization.

42159247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249489 (or 249476 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 42159247 is about 6493.0152471714. The cubic root of 42159247 is about 348.0414332796.

The spelling of 42159247 in words is "forty-two million, one hundred fifty-nine thousand, two hundred forty-seven".