402132222 has 16 divisors (see below), whose sum is σ = 893627280. Its totient is φ = 134044056.

The previous prime is 402132197. The next prime is 402132281. The reversal of 402132222 is 222231204.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 402132195 and 402132204.

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, 3723393 + ... + 3723500.

It is an arithmetic number, because the mean of its divisors is an integer number (55851705).

Almost surely, 2^402132222 is an apocalyptic number.

402132222 is an abundant number, since it is smaller than the sum of its proper divisors (491495058).

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

402132222 is a wasteful number, since it uses less digits than its factorization.

402132222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7446904 (or 7446898 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 402132222 is about 20053.2347016635. The cubic root of 402132222 is about 738.1131758482.

Adding to 402132222 its reverse (222231204), we get a palindrome (624363426).

The spelling of 402132222 in words is "four hundred two million, one hundred thirty-two thousand, two hundred twenty-two".