42013161 has 20 divisors (see below), whose sum is σ = 66066000. Its totient is φ = 26533656.

The previous prime is 42013121. The next prime is 42013163. The reversal of 42013161 is 16131024.

It is a happy number.

It is not a de Polignac number, because 42013161 - 2¹⁴ = 41996777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42013163) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12111 + ... + 15188.

It is an arithmetic number, because the mean of its divisors is an integer number (3303300).

Almost surely, 2^42013161 is an apocalyptic number.

It is an amenable number.

42013161 is a deficient number, since it is larger than the sum of its proper divisors (24052839).

42013161 is a wasteful number, since it uses less digits than its factorization.

42013161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27330 (or 27321 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 42013161 is about 6481.7560120696. The cubic root of 42013161 is about 347.6389686228.

Adding to 42013161 its reverse (16131024), we get a palindrome (58144185).

The spelling of 42013161 in words is "forty-two million, thirteen thousand, one hundred sixty-one".