202142423401 has 2 divisors, whose sum is σ = 202142423402. Its totient is φ = 202142423400.

The previous prime is 202142423393. The next prime is 202142423411. The reversal of 202142423401 is 104324241202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169950887001 + 32191536400 = 412251^2 + 179420^2 .

It is a cyclic number.

It is not a de Polignac number, because 202142423401 - 2³ = 202142423393 is a prime.

It is not a weakly prime, because it can be changed into another prime (202142423411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101071211700 + 101071211701.

It is an arithmetic number, because the mean of its divisors is an integer number (101071211701).

Almost surely, 2^202142423401 is an apocalyptic number.

It is an amenable number.

202142423401 is a deficient number, since it is larger than the sum of its proper divisors (1).

202142423401 is an equidigital number, since it uses as much as digits as its factorization.

202142423401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 202142423401 its reverse (104324241202), we get a palindrome (306466664603).

The spelling of 202142423401 in words is "two hundred two billion, one hundred forty-two million, four hundred twenty-three thousand, four hundred one".