42021820604 has 12 divisors (see below), whose sum is σ = 73560339384. Its totient is φ = 21004580784.

The previous prime is 42021820591. The next prime is 42021820609. The reversal of 42021820604 is 40602812024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42021820609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1567427 + ... + 1594010.

It is an arithmetic number, because the mean of its divisors is an integer number (6130028282).

Almost surely, 2^42021820604 is an apocalyptic number.

It is an amenable number.

42021820604 is a deficient number, since it is larger than the sum of its proper divisors (31538518780).

42021820604 is a wasteful number, since it uses less digits than its factorization.

42021820604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164764 (or 3164762 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 42021820604 in words is "forty-two billion, twenty-one million, eight hundred twenty thousand, six hundred four".