142722 has 20 divisors (see below), whose sum is σ = 320166. Its totient is φ = 47520.

The previous prime is 142711. The next prime is 142733. The reversal of 142722 is 227241.

It is an interprime number because it is at equal distance from previous prime (142711) and next prime (142733).

It can be written as a sum of positive squares in only one way, i.e., 136161 + 6561 = 369^2 + 81^2 .

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

It is a d-powerful number, because it can be written as 1 + 4⁵ + 7⁴ + 2⁵ + 2¹³ + 2¹⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 142695 and 142704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 279 + ... + 602.

2¹⁴²⁷²² is an apocalyptic number.

142722 is an abundant number, since it is smaller than the sum of its proper divisors (177444).

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

142722 is an equidigital number, since it uses as much as digits as its factorization.

142722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 886 counting only the distinct ones).

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

The square root of 142722 is about 377.7856535127. The cubic root of 142722 is about 52.2593063557.

Adding to 142722 its reverse (227241), we get a palindrome (369963).

The spelling of 142722 in words is "one hundred forty-two thousand, seven hundred twenty-two", and thus it is an iban number.