42264502213621 has 2 divisors, whose sum is σ = 42264502213622. Its totient is φ = 42264502213620.

The previous prime is 42264502213513. The next prime is 42264502213627. The reversal of 42264502213621 is 12631220546224.

42264502213621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41230345419396 + 1034156794225 = 6421086^2 + 1016935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42264502213621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42264502213627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21132251106810 + 21132251106811.

It is an arithmetic number, because the mean of its divisors is an integer number (21132251106811).

Almost surely, 2^{42264502213621} is an apocalyptic number.

It is an amenable number.

42264502213621 is a deficient number, since it is larger than the sum of its proper divisors (1).

42264502213621 is an equidigital number, since it uses as much as digits as its factorization.

42264502213621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 40.

Adding to 42264502213621 its reverse (12631220546224), we get a palindrome (54895722759845).

The spelling of 42264502213621 in words is "forty-two trillion, two hundred sixty-four billion, five hundred two million, two hundred thirteen thousand, six hundred twenty-one".