42426242020 has 12 divisors (see below), whose sum is σ = 89095108284. Its totient is φ = 16970496800.

The previous prime is 42426242017. The next prime is 42426242021. The reversal of 42426242020 is 2024262424.

It can be written as a sum of positive squares in 2 ways, for example, as 28718047296 + 13708194724 = 169464^2 + 117082^2 .

It is a super-2 number, since 2×42426242020² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42426242020.

It is not an unprimeable number, because it can be changed into a prime (42426242021) by changing a digit.

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, 1060656031 + ... + 1060656070.

It is an arithmetic number, because the mean of its divisors is an integer number (7424592357).

Almost surely, 2^42426242020 is an apocalyptic number.

It is an amenable number.

42426242020 is an abundant number, since it is smaller than the sum of its proper divisors (46668866264).

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

42426242020 is a wasteful number, since it uses less digits than its factorization.

42426242020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121312110 (or 2121312108 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The spelling of 42426242020 in words is "forty-two billion, four hundred twenty-six million, two hundred forty-two thousand, twenty".