42020402002 has 8 divisors (see below), whose sum is σ = 63211207500. Its totient is φ = 20949999504.

The previous prime is 42020401987. The next prime is 42020402041. The reversal of 42020402002 is 20020402024.

It can be written as a sum of positive squares in 2 ways, for example, as 41387426721 + 632975281 = 203439^2 + 25159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30099877 + ... + 30101272.

Almost surely, 2^42020402002 is an apocalyptic number.

42020402002 is a deficient number, since it is larger than the sum of its proper divisors (21190805498).

42020402002 is a wasteful number, since it uses less digits than its factorization.

42020402002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60201500.

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 42020402002 its reverse (20020402024), we get a palindrome (62040804026).

The spelling of 42020402002 in words is "forty-two billion, twenty million, four hundred two thousand, two".