40042313443042 has 4 divisors (see below), whose sum is σ = 60063470164566. Its totient is φ = 20021156721520.

The previous prime is 40042313443037. The next prime is 40042313443049. The reversal of 40042313443042 is 24034431324004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39971211753841 + 71101689201 = 6322279^2 + 266649^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40042313442989 and 40042313443007.

It is not an unprimeable number, because it can be changed into a prime (40042313443049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010578360759 + ... + 10010578360762.

Almost surely, 2^{40042313443042} is an apocalyptic number.

40042313443042 is a deficient number, since it is larger than the sum of its proper divisors (20021156721524).

40042313443042 is a wasteful number, since it uses less digits than its factorization.

40042313443042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20021156721523.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 40042313443042 its reverse (24034431324004), we get a palindrome (64076744767046).

The spelling of 40042313443042 in words is "forty trillion, forty-two billion, three hundred thirteen million, four hundred forty-three thousand, forty-two".