42021102912 has 56 divisors (see below), whose sum is σ = 111339794592. Its totient is φ = 13987008000.

The previous prime is 42021102901. The next prime is 42021102913. The reversal of 42021102912 is 21920112024.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42021102913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21514 + ... + 290697.

Almost surely, 2^42021102912 is an apocalyptic number.

It is an amenable number.

42021102912 is an abundant number, since it is smaller than the sum of its proper divisors (69318691680).

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

42021102912 is a wasteful number, since it uses less digits than its factorization.

42021102912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312927 (or 312917 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 42021102912 its reverse (21920112024), we get a palindrome (63941214936).

The spelling of 42021102912 in words is "forty-two billion, twenty-one million, one hundred two thousand, nine hundred twelve".