722124 has 36 divisors (see below), whose sum is σ = 1967056. Its totient is φ = 222048.

The previous prime is 722123. The next prime is 722147. The reversal of 722124 is 421227.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 722097 and 722106.

It is not an unprimeable number, because it can be changed into a prime (722123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304 + ... + 1239.

2⁷²²¹²⁴ is an apocalyptic number.

It is an amenable number.

722124 is an abundant number, since it is smaller than the sum of its proper divisors (1244932).

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

722124 is a wasteful number, since it uses less digits than its factorization.

722124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566 (or 1561 counting only the distinct ones).

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

The square root of 722124 is about 849.7787947460. The cubic root of 722124 is about 89.7161427009.

The spelling of 722124 in words is "seven hundred twenty-two thousand, one hundred twenty-four", and thus it is an iban number.