124445 has 4 divisors (see below), whose sum is σ = 149340. Its totient is φ = 99552.

The previous prime is 124433. The next prime is 124447. The reversal of 124445 is 544421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544421 = 563 ⋅967.

It can be written as a sum of positive squares in 2 ways, for example, as 14884 + 109561 = 122^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 124445 - 2⁴ = 124429 is a prime.

It is a Curzon number.

It is a plaindrome in base 10 and base 14.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124447) 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, 12440 + ... + 12449.

It is an arithmetic number, because the mean of its divisors is an integer number (37335).

2¹²⁴⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

124445 is a deficient number, since it is larger than the sum of its proper divisors (24895).

124445 is an equidigital number, since it uses as much as digits as its factorization.

124445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24894.

The product of its digits is 640, while the sum is 20.

The square root of 124445 is about 352.7676289004. The cubic root of 124445 is about 49.9258902090.

Adding to 124445 its reverse (544421), we get a palindrome (668866).

The spelling of 124445 in words is "one hundred twenty-four thousand, four hundred forty-five".