42421021540000 has 60 divisors (see below), whose sum is σ = 104362076190834. Its totient is φ = 16968408608000.

The previous prime is 42421021539997. The next prime is 42421021540019. The reversal of 42421021540000 is 4512012424.

It can be written as a sum of positive squares in 5 ways, for example, as 1487590030224 + 40933431509776 = 1219668^2 + 6397924^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1060505539 + ... + 1060545538.

Almost surely, 2^{42421021540000} is an apocalyptic number.

42421021540000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42421021540000 is an abundant number, since it is smaller than the sum of its proper divisors (61941054650834).

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

42421021540000 is an equidigital number, since it uses as much as digits as its factorization.

42421021540000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121051107 (or 2121051084 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 42421021540000 its reverse (4512012424), we get a palindrome (42425533552424).

The spelling of 42421021540000 in words is "forty-two trillion, four hundred twenty-one billion, twenty-one million, five hundred forty thousand".