123572 has 6 divisors (see below), whose sum is σ = 216258. Its totient is φ = 61784.

The previous prime is 123553. The next prime is 123581. The reversal of 123572 is 275321.

It can be written as a sum of positive squares in only one way, i.e., 99856 + 23716 = 316^2 + 154^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15443 + ... + 15450.

It is an arithmetic number, because the mean of its divisors is an integer number (36043).

2¹²³⁵⁷² is an apocalyptic number.

It is an amenable number.

123572 is a deficient number, since it is larger than the sum of its proper divisors (92686).

123572 is a wasteful number, since it uses less digits than its factorization.

123572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30897 (or 30895 counting only the distinct ones).

The product of its digits is 420, while the sum is 20.

The square root of 123572 is about 351.5280927607. The cubic root of 123572 is about 49.8088703199.

Adding to 123572 its reverse (275321), we get a palindrome (398893).

The spelling of 123572 in words is "one hundred twenty-three thousand, five hundred seventy-two".