23402421019 has 2 divisors, whose sum is σ = 23402421020. Its totient is φ = 23402421018.

The previous prime is 23402420969. The next prime is 23402421043. The reversal of 23402421019 is 91012420432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23402421019 - 2⁷ = 23402420891 is a prime.

It is a super-2 number, since 2×23402421019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23402421059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11701210509 + 11701210510.

It is an arithmetic number, because the mean of its divisors is an integer number (11701210510).

Almost surely, 2^23402421019 is an apocalyptic number.

23402421019 is a deficient number, since it is larger than the sum of its proper divisors (1).

23402421019 is an equidigital number, since it uses as much as digits as its factorization.

23402421019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 23402421019 in words is "twenty-three billion, four hundred two million, four hundred twenty-one thousand, nineteen".