42250536621 has 12 divisors (see below), whose sum is σ = 61131475548. Its totient is φ = 28119521664.

The previous prime is 42250536583. The next prime is 42250536623. The reversal of 42250536621 is 12663505224.

42250536621 is a `hidden beast` number, since 4 + 2 + 25 + 0 + 5 + 3 + 6 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8224676100 + 34025860521 = 90690^2 + 184461^2 .

It is not a de Polignac number, because 42250536621 - 2⁶ = 42250536557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42250536623) 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 11 ways as a sum of consecutive naturals, for example, 3952930 + ... + 3963603.

It is an arithmetic number, because the mean of its divisors is an integer number (5094289629).

Almost surely, 2^42250536621 is an apocalyptic number.

It is an amenable number.

42250536621 is a deficient number, since it is larger than the sum of its proper divisors (18880938927).

42250536621 is a wasteful number, since it uses less digits than its factorization.

42250536621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7917132 (or 7917129 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 42250536621 in words is "forty-two billion, two hundred fifty million, five hundred thirty-six thousand, six hundred twenty-one".