124243400 has 24 divisors (see below), whose sum is σ = 288866370. Its totient is φ = 49697280.

The previous prime is 124243367. The next prime is 124243409. The reversal of 124243400 is 4342421.

It can be written as a sum of positive squares in 3 ways, for example, as 116942596 + 7300804 = 10814^2 + 2702^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124243409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 310409 + ... + 310808.

Almost surely, 2^124243400 is an apocalyptic number.

124243400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124243400 is an abundant number, since it is smaller than the sum of its proper divisors (164622970).

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

124243400 is a wasteful number, since it uses less digits than its factorization.

124243400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621233 (or 621224 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 124243400 is about 11146.4523504118. The cubic root of 124243400 is about 498.9891577732.

Adding to 124243400 its reverse (4342421), we get a palindrome (128585821).

The spelling of 124243400 in words is "one hundred twenty-four million, two hundred forty-three thousand, four hundred".