202402091 has 2 divisors, whose sum is σ = 202402092. Its totient is φ = 202402090.

The previous prime is 202402073. The next prime is 202402111. The reversal of 202402091 is 190204202.

It is an a-pointer prime, because the next prime (202402111) can be obtained adding 202402091 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202402091 - 2⁶ = 202402027 is a prime.

It is not a weakly prime, because it can be changed into another prime (202402021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101201045 + 101201046.

It is an arithmetic number, because the mean of its divisors is an integer number (101201046).

Almost surely, 2^202402091 is an apocalyptic number.

202402091 is a deficient number, since it is larger than the sum of its proper divisors (1).

202402091 is an equidigital number, since it uses as much as digits as its factorization.

202402091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 202402091 is about 14226.8088832317. The cubic root of 202402091 is about 587.1354887511.

Adding to 202402091 its reverse (190204202), we get a palindrome (392606293).

The spelling of 202402091 in words is "two hundred two million, four hundred two thousand, ninety-one".