40342042 has 8 divisors (see below), whose sum is σ = 65167956. Its totient is φ = 18619392.

The previous prime is 40342039. The next prime is 40342079. The reversal of 40342042 is 24024304.

It can be written as a sum of positive squares in 2 ways, for example, as 38328481 + 2013561 = 6191^2 + 1419^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775783 + ... + 775834.

Almost surely, 2^40342042 is an apocalyptic number.

40342042 is a deficient number, since it is larger than the sum of its proper divisors (24825914).

40342042 is a wasteful number, since it uses less digits than its factorization.

40342042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551632.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40342042 is about 6351.5385537679. The cubic root of 40342042 is about 342.9672299099.

Adding to 40342042 its reverse (24024304), we get a palindrome (64366346).

The spelling of 40342042 in words is "forty million, three hundred forty-two thousand, forty-two".