342426 has 32 divisors (see below), whose sum is σ = 811008. Its totient is φ = 94320.

The previous prime is 342421. The next prime is 342449. The reversal of 342426 is 624243.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (342421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1171 + ... + 1433.

It is an arithmetic number, because the mean of its divisors is an integer number (25344).

2³⁴²⁴²⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405504).

342426 is an abundant number, since it is smaller than the sum of its proper divisors (468582).

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

342426 is a wasteful number, since it uses less digits than its factorization.

342426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306.

The product of its digits is 1152, while the sum is 21.

The square root of 342426 is about 585.1717696540. The cubic root of 342426 is about 69.9609305790.

Adding to 342426 its reverse (624243), we get a palindrome (966669).

The spelling of 342426 in words is "three hundred forty-two thousand, four hundred twenty-six".