727122 has 32 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 210320.

The previous prime is 727121. The next prime is 727123. The reversal of 727122 is 221727.

It is an interprime number because it is at equal distance from previous prime (727121) and next prime (727123).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1279 + ... + 1757.

It is an arithmetic number, because the mean of its divisors is an integer number (51840).

2⁷²⁷¹²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 727122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829440).

727122 is an abundant number, since it is smaller than the sum of its proper divisors (931758).

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

727122 is a wasteful number, since it uses less digits than its factorization.

727122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518.

The product of its digits is 392, while the sum is 21.

The square root of 727122 is about 852.7144891463. The cubic root of 727122 is about 89.9226495897.

Adding to 727122 its reverse (221727), we get a palindrome (948849).

The spelling of 727122 in words is "seven hundred twenty-seven thousand, one hundred twenty-two", and thus it is an iban number.