40442402 has 32 divisors (see below), whose sum is σ = 81454464. Its totient is φ = 14544000.

The previous prime is 40442377. The next prime is 40442407. The reversal of 40442402 is 20424404.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (40442407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8099 + ... + 12102.

It is an arithmetic number, because the mean of its divisors is an integer number (2545452).

Almost surely, 2^40442402 is an apocalyptic number.

40442402 is an abundant number, since it is smaller than the sum of its proper divisors (41012062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40442402 is a wasteful number, since it uses less digits than its factorization.

40442402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20234.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 40442402 is about 6359.4340943200. The cubic root of 40442402 is about 343.2513973788.

Adding to 40442402 its reverse (20424404), we get a palindrome (60866806).

It can be divided in two parts, 4044 and 2402, that added together give a palindrome (6446).

The spelling of 40442402 in words is "forty million, four hundred forty-two thousand, four hundred two".