622542 has 16 divisors (see below), whose sum is σ = 1285632. Its totient is φ = 200760.

The previous prime is 622529. The next prime is 622547. The reversal of 622542 is 245226.

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 622542.

It is not an unprimeable number, because it can be changed into a prime (622547) 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, 1488 + ... + 1859.

It is an arithmetic number, because the mean of its divisors is an integer number (80352).

2⁶²²⁵⁴² is an apocalyptic number.

622542 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

622542 is an abundant number, since it is smaller than the sum of its proper divisors (663090).

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

622542 is a wasteful number, since it uses less digits than its factorization.

622542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383.

The product of its digits is 960, while the sum is 21.

The square root of 622542 is about 789.0133078726. The cubic root of 622542 is about 85.3865668549.

Subtracting from 622542 its sum of digits (21), we obtain a square (622521 = 789²).

Adding to 622542 its reverse (245226), we get a palindrome (867768).

The spelling of 622542 in words is "six hundred twenty-two thousand, five hundred forty-two".