423402 has 32 divisors (see below), whose sum is σ = 1026432. Its totient is φ = 113664.

The previous prime is 423389. The next prime is 423403. The reversal of 423402 is 204324.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423403) by changing a digit.

423402 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418 + ... + 1010.

It is an arithmetic number, because the mean of its divisors is an integer number (32076).

2⁴²³⁴⁰² is an apocalyptic number.

423402 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 423402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513216).

423402 is an abundant number, since it is smaller than the sum of its proper divisors (603030).

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

423402 is a wasteful number, since it uses less digits than its factorization.

423402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 423402 is about 650.6934762236. The cubic root of 423402 is about 75.0903799314.

Adding to 423402 its reverse (204324), we get a palindrome (627726).

It can be divided in two parts, 42 and 3402, that multiplied together give a square (142884 = 378²).

The spelling of 423402 in words is "four hundred twenty-three thousand, four hundred two", and thus it is an iban number.