42021056000002 has 4 divisors (see below), whose sum is σ = 63031584000006. Its totient is φ = 21010528000000.

The previous prime is 42021055999999. The next prime is 42021056000003. The reversal of 42021056000002 is 20000065012024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29812593728281 + 12208462271721 = 5460091^2 + 3494061^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42021056000003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505263999999 + ... + 10505264000002.

Almost surely, 2^{42021056000002} is an apocalyptic number.

42021056000002 is a deficient number, since it is larger than the sum of its proper divisors (21010528000004).

42021056000002 is a wasteful number, since it uses less digits than its factorization.

42021056000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21010528000003.

The product of its (nonzero) digits is 960, while the sum is 22.

The spelling of 42021056000002 in words is "forty-two trillion, twenty-one billion, fifty-six million, two", and thus it is an aban number and an uban number.