402022271 has 8 divisors (see below), whose sum is σ = 459669024. Its totient is φ = 344429280.

The previous prime is 402022259. The next prime is 402022277. The reversal of 402022271 is 172220204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402022271 - 2¹⁸ = 401760127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402022277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4121 + ... + 28653.

It is an arithmetic number, because the mean of its divisors is an integer number (57458628).

Almost surely, 2^402022271 is an apocalyptic number.

402022271 is a deficient number, since it is larger than the sum of its proper divisors (57646753).

402022271 is a wasteful number, since it uses less digits than its factorization.

402022271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26881.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 402022271 is about 20050.4930363320. The cubic root of 402022271 is about 738.0458980764.

Adding to 402022271 its reverse (172220204), we get a palindrome (574242475).

The spelling of 402022271 in words is "four hundred two million, twenty-two thousand, two hundred seventy-one".