402132091 has 2 divisors, whose sum is σ = 402132092. Its totient is φ = 402132090.

The previous prime is 402132007. The next prime is 402132103. The reversal of 402132091 is 190231204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402132091 - 2¹⁵ = 402099323 is a prime.

It is a super-2 number, since 2×402132091² = 323420437224064562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (402132491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201066045 + 201066046.

It is an arithmetic number, because the mean of its divisors is an integer number (201066046).

Almost surely, 2^402132091 is an apocalyptic number.

402132091 is a deficient number, since it is larger than the sum of its proper divisors (1).

402132091 is an equidigital number, since it uses as much as digits as its factorization.

402132091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 402132091 is about 20053.2314353572. The cubic root of 402132091 is about 738.1130956980.

Adding to 402132091 its reverse (190231204), we get a palindrome (592363295).

The spelling of 402132091 in words is "four hundred two million, one hundred thirty-two thousand, ninety-one".