42031020020 has 48 divisors (see below), whose sum is σ = 96603046848. Its totient is φ = 15234197760.

The previous prime is 42031019941. The next prime is 42031020023. The reversal of 42031020020 is 2002013024.

It is a junction number, because it is equal to n+sod(n) for n = 42031019977 and 42031020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42031020023) 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, 243617 + ... + 378696.

It is an arithmetic number, because the mean of its divisors is an integer number (2012563476).

Almost surely, 2^42031020020 is an apocalyptic number.

It is an amenable number.

42031020020 is an abundant number, since it is smaller than the sum of its proper divisors (54572026828).

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

42031020020 is a wasteful number, since it uses less digits than its factorization.

42031020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622640 (or 622638 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 42031020020 its reverse (2002013024), we get a palindrome (44033033044).

The spelling of 42031020020 in words is "forty-two billion, thirty-one million, twenty thousand, twenty".