124290 has 24 divisors (see below), whose sum is σ = 323388. Its totient is φ = 33120.

The previous prime is 124277. The next prime is 124291. The reversal of 124290 is 92421.

It can be written as a sum of positive squares in 2 ways, for example, as 123201 + 1089 = 351^2 + 33^2 .

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

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (124291) by changing a digit.

124290 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 601 + ... + 780.

2¹²⁴²⁹⁰ is an apocalyptic number.

124290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

124290 is an abundant number, since it is smaller than the sum of its proper divisors (199098).

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

124290 is a wasteful number, since it uses less digits than its factorization.

124290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 124290 is about 352.5478690901. The cubic root of 124290 is about 49.9051535300.

It can be divided in two parts, 124 and 290, that added together give a palindrome (414).

The spelling of 124290 in words is "one hundred twenty-four thousand, two hundred ninety".