542722 has 8 divisors (see below), whose sum is σ = 823500. Its totient is φ = 268224.

The previous prime is 542719. The next prime is 542723. The reversal of 542722 is 227245.

It can be written as a sum of positive squares in 2 ways, for example, as 463761 + 78961 = 681^2 + 281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 542693 and 542702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347 + ... + 1702.

2⁵⁴²⁷²² is an apocalyptic number.

542722 is a deficient number, since it is larger than the sum of its proper divisors (280778).

542722 is a wasteful number, since it uses less digits than its factorization.

542722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140.

The product of its digits is 1120, while the sum is 22.

The square root of 542722 is about 736.6966811382. The cubic root of 542722 is about 81.5691259915.

Adding to 542722 its reverse (227245), we get a palindrome (769967).

The spelling of 542722 in words is "five hundred forty-two thousand, seven hundred twenty-two".