40330242 has 24 divisors (see below), whose sum is σ = 90396540. Its totient is φ = 12979680.

The previous prime is 40330231. The next prime is 40330243. The reversal of 40330242 is 24203304.

It can be written as a sum of positive squares in 2 ways, for example, as 39425841 + 904401 = 6279^2 + 951^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40330243) 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, 38109 + ... + 39152.

Almost surely, 2^40330242 is an apocalyptic number.

40330242 is an abundant number, since it is smaller than the sum of its proper divisors (50066298).

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

40330242 is a wasteful number, since it uses less digits than its factorization.

40330242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77298 (or 77295 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40330242 is about 6350.6095770406. The cubic root of 40330242 is about 342.9337874782.

Adding to 40330242 its reverse (24203304), we get a palindrome (64533546).

The spelling of 40330242 in words is "forty million, three hundred thirty thousand, two hundred forty-two".