42159049 has 9 divisors (see below), whose sum is σ = 43450029. Its totient is φ = 40905900.

The previous prime is 42159001. The next prime is 42159059. The reversal of 42159049 is 94095124.

The square root of 42159049 is 6493.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 42159049 - 2²³ = 33770441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42159059) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 279124 + ... + 279274.

It is an arithmetic number, because the mean of its divisors is an integer number (4827781).

Almost surely, 2^42159049 is an apocalyptic number.

42159049 is the 6493-rd square number.

42159049 is the 3247-th centered octagonal number.

It is an amenable number.

42159049 is a deficient number, since it is larger than the sum of its proper divisors (1290980).

42159049 is an frugal number, since it uses more digits than its factorization.

42159049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The cubic root of 42159049 is about 348.0408884224.

The spelling of 42159049 in words is "forty-two million, one hundred fifty-nine thousand, forty-nine".