42242403434021 has 32 divisors (see below), whose sum is σ = 51664887300096. Its totient is φ = 33773282928000.

The previous prime is 42242403433943. The next prime is 42242403434027. The reversal of 42242403434021 is 12043430424224.

It is not a de Polignac number, because 42242403434021 - 2¹⁰ = 42242403432997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242403434027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27863585 + ... + 29340486.

It is an arithmetic number, because the mean of its divisors is an integer number (1614527728128).

Almost surely, 2^{42242403434021} is an apocalyptic number.

42242403434021 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42242403434021 is a deficient number, since it is larger than the sum of its proper divisors (9422483866075).

42242403434021 is a wasteful number, since it uses less digits than its factorization.

42242403434021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57204233.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 42242403434021 its reverse (12043430424224), we get a palindrome (54285833858245).

The spelling of 42242403434021 in words is "forty-two trillion, two hundred forty-two billion, four hundred three million, four hundred thirty-four thousand, twenty-one".