202421423069 has 2 divisors, whose sum is σ = 202421423070. Its totient is φ = 202421423068.

The previous prime is 202421422999. The next prime is 202421423077. The reversal of 202421423069 is 960324124202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138430131844 + 63991291225 = 372062^2 + 252965^2 .

It is a cyclic number.

It is not a de Polignac number, because 202421423069 - 2³² = 198126455773 is a prime.

It is a super-2 number, since 2×202421423069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202421423669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101210711534 + 101210711535.

It is an arithmetic number, because the mean of its divisors is an integer number (101210711535).

Almost surely, 2^202421423069 is an apocalyptic number.

It is an amenable number.

202421423069 is a deficient number, since it is larger than the sum of its proper divisors (1).

202421423069 is an equidigital number, since it uses as much as digits as its factorization.

202421423069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 202421423069 in words is "two hundred two billion, four hundred twenty-one million, four hundred twenty-three thousand, sixty-nine".