403402122 has 48 divisors (see below), whose sum is σ = 906272640. Its totient is φ = 129530016.

The previous prime is 403402099. The next prime is 403402127. The reversal of 403402122 is 221204304.

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 = 403402095 and 403402104.

It is not an unprimeable number, because it can be changed into a prime (403402127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 378963 + ... + 380025.

It is an arithmetic number, because the mean of its divisors is an integer number (18880680).

Almost surely, 2^403402122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403402122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453136320).

403402122 is an abundant number, since it is smaller than the sum of its proper divisors (502870518).

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

403402122 is a wasteful number, since it uses less digits than its factorization.

403402122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827 (or 1824 counting only the distinct ones).

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

The square root of 403402122 is about 20084.8729644974. The cubic root of 403402122 is about 738.8893260199.

Adding to 403402122 its reverse (221204304), we get a palindrome (624606426).

The spelling of 403402122 in words is "four hundred three million, four hundred two thousand, one hundred twenty-two".