40402323442 has 16 divisors (see below), whose sum is σ = 65336971392. Its totient is φ = 18626746320.

The previous prime is 40402323427. The next prime is 40402323487. The reversal of 40402323442 is 24432320404.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40402323442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829188 + ... + 876559.

It is an arithmetic number, because the mean of its divisors is an integer number (4083560712).

Almost surely, 2^40402323442 is an apocalyptic number.

40402323442 is a deficient number, since it is larger than the sum of its proper divisors (24934647950).

40402323442 is a wasteful number, since it uses less digits than its factorization.

40402323442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706673.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 40402323442 its reverse (24432320404), we get a palindrome (64834643846).

The spelling of 40402323442 in words is "forty billion, four hundred two million, three hundred twenty-three thousand, four hundred forty-two".