42202421623 has 2 divisors, whose sum is σ = 42202421624. Its totient is φ = 42202421622.

The previous prime is 42202421587. The next prime is 42202421633. The reversal of 42202421623 is 32612420224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42202421623 - 2⁹ = 42202421111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42202421591 and 42202421600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42202421633) 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, 21101210811 + 21101210812.

It is an arithmetic number, because the mean of its divisors is an integer number (21101210812).

Almost surely, 2^42202421623 is an apocalyptic number.

42202421623 is a deficient number, since it is larger than the sum of its proper divisors (1).

42202421623 is an equidigital number, since it uses as much as digits as its factorization.

42202421623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 42202421623 its reverse (32612420224), we get a palindrome (74814841847).

The spelling of 42202421623 in words is "forty-two billion, two hundred two million, four hundred twenty-one thousand, six hundred twenty-three".