40402040420042 has 8 divisors (see below), whose sum is σ = 69260640720096. Its totient is φ = 17315160180012.

The previous prime is 40402040420033. The next prime is 40402040420047. The reversal of 40402040420042 is 24002404020404.

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

It is a junction number, because it is equal to n+sod(n) for n = 40402040419993 and 40402040420020.

It is not an unprimeable number, because it can be changed into a prime (40402040420047) 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, 1442930014988 + ... + 1442930015015.

It is an arithmetic number, because the mean of its divisors is an integer number (8657580090012).

Almost surely, 2^{40402040420042} is an apocalyptic number.

40402040420042 is a deficient number, since it is larger than the sum of its proper divisors (28858600300054).

40402040420042 is a wasteful number, since it uses less digits than its factorization.

40402040420042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2885860030012.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 40402040420042 its reverse (24002404020404), we get a palindrome (64404444440446).

The spelling of 40402040420042 in words is "forty trillion, four hundred two billion, forty million, four hundred twenty thousand, forty-two".