42159213 has 6 divisors (see below), whose sum is σ = 60896654. Its totient is φ = 28106136.

The previous prime is 42159209. The next prime is 42159223. The reversal of 42159213 is 31295124.

It can be written as a sum of positive squares in only one way, i.e., 27436644 + 14722569 = 5238^2 + 3837^2 .

It is not a de Polignac number, because 42159213 - 2² = 42159209 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 (42159223) 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, 2342170 + ... + 2342187.

Almost surely, 2^42159213 is an apocalyptic number.

It is an amenable number.

42159213 is a deficient number, since it is larger than the sum of its proper divisors (18737441).

42159213 is a wasteful number, since it uses less digits than its factorization.

42159213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684363 (or 4684360 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 42159213 is about 6493.0126289728. The cubic root of 42159213 is about 348.0413397184.

The spelling of 42159213 in words is "forty-two million, one hundred fifty-nine thousand, two hundred thirteen".