40042232 has 16 divisors (see below), whose sum is σ = 75146400. Its totient is φ = 20003200.

The previous prime is 40042231. The next prime is 40042273. The reversal of 40042232 is 23224004.

It is a self number, because there is not a number n which added to its sum of digits gives 40042232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15857 + ... + 18207.

It is an arithmetic number, because the mean of its divisors is an integer number (4696650).

Almost surely, 2^40042232 is an apocalyptic number.

It is an amenable number.

40042232 is a deficient number, since it is larger than the sum of its proper divisors (35104168).

40042232 is a wasteful number, since it uses less digits than its factorization.

40042232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486 (or 4482 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40042232 is about 6327.8931722968. The cubic root of 40042232 is about 342.1155065086.

Adding to 40042232 its reverse (23224004), we get a palindrome (63266236).

The spelling of 40042232 in words is "forty million, forty-two thousand, two hundred thirty-two".