402401022 has 16 divisors (see below), whose sum is σ = 810205200. Its totient is φ = 133233152.

The previous prime is 402401017. The next prime is 402401053. The reversal of 402401022 is 220104204.

It is a junction number, because it is equal to n+sod(n) for n = 402400992 and 402401010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224163 + ... + 225950.

It is an arithmetic number, because the mean of its divisors is an integer number (50637825).

Almost surely, 2^402401022 is an apocalyptic number.

402401022 is an abundant number, since it is smaller than the sum of its proper divisors (407804178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402401022 is a wasteful number, since it uses less digits than its factorization.

402401022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450267.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 402401022 is about 20059.9357426688. The cubic root of 402401022 is about 738.2775999026.

Adding to 402401022 its reverse (220104204), we get a palindrome (622505226).

The spelling of 402401022 in words is "four hundred two million, four hundred one thousand, twenty-two".