42159249 has 12 divisors (see below), whose sum is σ = 66432912. Its totient is φ = 25551000.

The previous prime is 42159223. The next prime is 42159251. The reversal of 42159249 is 94295124.

42159249 is a `hidden beast` number, since 4 + 21 + 592 + 49 = 666.

It is not a de Polignac number, because 42159249 - 2⁹ = 42158737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42159209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212827 + ... + 213024.

It is an arithmetic number, because the mean of its divisors is an integer number (5536076).

Almost surely, 2^42159249 is an apocalyptic number.

It is an amenable number.

42159249 is a deficient number, since it is larger than the sum of its proper divisors (24273663).

42159249 is a wasteful number, since it uses less digits than its factorization.

42159249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425868 (or 425865 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 42159249 is about 6493.0154011830. The cubic root of 42159249 is about 348.0414387832.

The spelling of 42159249 in words is "forty-two million, one hundred fifty-nine thousand, two hundred forty-nine".