42216039 has 16 divisors (see below), whose sum is σ = 62642400. Its totient is φ = 28099008.

The previous prime is 42216029. The next prime is 42216061. The reversal of 42216039 is 93061224.

It is not a de Polignac number, because 42216039 - 2⁴ = 42216023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42216029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32107 + ... + 33395.

It is an arithmetic number, because the mean of its divisors is an integer number (3915150).

Almost surely, 2^42216039 is an apocalyptic number.

42216039 is a deficient number, since it is larger than the sum of its proper divisors (20426361).

42216039 is a wasteful number, since it uses less digits than its factorization.

42216039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511 (or 2505 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 42216039 is about 6497.3870902079. The cubic root of 42216039 is about 348.1976433771.

It can be divided in two parts, 422 and 16039, that added together give a palindrome (16461).

The spelling of 42216039 in words is "forty-two million, two hundred sixteen thousand, thirty-nine".