40016242 has 24 divisors (see below), whose sum is σ = 73502640. Its totient is φ = 16246440.

The previous prime is 40016237. The next prime is 40016243. The reversal of 40016242 is 24261004.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (40016243) 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, 8884 + ... + 12607.

It is an arithmetic number, because the mean of its divisors is an integer number (3062610).

Almost surely, 2^40016242 is an apocalyptic number.

40016242 is a deficient number, since it is larger than the sum of its proper divisors (33486398).

40016242 is a wasteful number, since it uses less digits than its factorization.

40016242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21526 (or 21519 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 40016242 is about 6325.8392328607. The cubic root of 40016242 is about 342.0414721204.

Adding to 40016242 its reverse (24261004), we get a palindrome (64277246).

The spelling of 40016242 in words is "forty million, sixteen thousand, two hundred forty-two".