623942 has 16 divisors (see below), whose sum is σ = 1036800. Its totient is φ = 279240.

The previous prime is 623933. The next prime is 623947. The reversal of 623942 is 249326.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 623942.

It is not an unprimeable number, because it can be changed into a prime (623947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559 + ... + 1917.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2⁶²³⁹⁴² is an apocalyptic number.

623942 is a deficient number, since it is larger than the sum of its proper divisors (412858).

623942 is a wasteful number, since it uses less digits than its factorization.

623942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its digits is 2592, while the sum is 26.

The square root of 623942 is about 789.8999936701. The cubic root of 623942 is about 85.4505259643.

It can be divided in two parts, 62 and 3942, that added together give a palindrome (4004).

The spelling of 623942 in words is "six hundred twenty-three thousand, nine hundred forty-two".