124722 has 36 divisors (see below), whose sum is σ = 299754. Its totient is φ = 37440.

The previous prime is 124721. The next prime is 124739. The reversal of 124722 is 227421.

It can be written as a sum of positive squares in 3 ways, for example, as 29241 + 95481 = 171^2 + 309^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 124695 and 124704.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 124722.

It is not an unprimeable number, because it can be changed into a prime (124721) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3022 + ... + 3062.

2¹²⁴⁷²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 124722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149877).

124722 is an abundant number, since it is smaller than the sum of its proper divisors (175032).

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

124722 is a wasteful number, since it uses less digits than its factorization.

124722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 59 counting only the distinct ones).

The product of its digits is 224, while the sum is 18.

The square root of 124722 is about 353.1600203874. The cubic root of 124722 is about 49.9629058206.

The spelling of 124722 in words is "one hundred twenty-four thousand, seven hundred twenty-two", and thus it is an iban number.