623542 has 16 divisors (see below), whose sum is σ = 1004400. Its totient is φ = 289440.

The previous prime is 623537. The next prime is 623563. The reversal of 623542 is 245326.

It is a happy number.

623542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 6³ + 2¹⁵ + 5 + 3⁶ + 4⁸ + 2¹⁹ .

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

623542 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 7 ways as a sum of consecutive naturals, for example, 2184 + ... + 2452.

It is an arithmetic number, because the mean of its divisors is an integer number (62775).

2⁶²³⁵⁴² is an apocalyptic number.

623542 is a deficient number, since it is larger than the sum of its proper divisors (380858).

623542 is a wasteful number, since it uses less digits than its factorization.

623542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351.

The product of its digits is 1440, while the sum is 22.

The square root of 623542 is about 789.6467564677. The cubic root of 623542 is about 85.4322617041.

Adding to 623542 its reverse (245326), we get a palindrome (868868).

The spelling of 623542 in words is "six hundred twenty-three thousand, five hundred forty-two".