42243142421020 has 24 divisors (see below), whose sum is σ = 88710893485200. Its totient is φ = 16897200892032.

The previous prime is 42243142420981. The next prime is 42243142421041. The reversal of 42243142421020 is 2012424134224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2963571 + ... + 9657589.

It is an arithmetic number, because the mean of its divisors is an integer number (3696287228550).

Almost surely, 2^{42243142421020} is an apocalyptic number.

It is an amenable number.

42243142421020 is an abundant number, since it is smaller than the sum of its proper divisors (46467751064180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42243142421020 is a wasteful number, since it uses less digits than its factorization.

42243142421020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7009557 (or 7009555 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 42243142421020 its reverse (2012424134224), we get a palindrome (44255566555244).

The spelling of 42243142421020 in words is "forty-two trillion, two hundred forty-three billion, one hundred forty-two million, four hundred twenty-one thousand, twenty".