42000021041242 has 32 divisors (see below), whose sum is σ = 69531426302400. Its totient is φ = 18867749155200.

The previous prime is 42000021041179. The next prime is 42000021041243. The reversal of 42000021041242 is 24214012000024.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (42000021041243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655609 + ... + 9188572.

It is an arithmetic number, because the mean of its divisors is an integer number (2172857071950).

Almost surely, 2^{42000021041242} is an apocalyptic number.

42000021041242 is a deficient number, since it is larger than the sum of its proper divisors (27531405261158).

42000021041242 is a wasteful number, since it uses less digits than its factorization.

42000021041242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9846462.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 42000021041242 its reverse (24214012000024), we get a palindrome (66214033041266).

The spelling of 42000021041242 in words is "forty-two trillion, twenty-one million, forty-one thousand, two hundred forty-two".