124020100 has 36 divisors (see below), whose sum is σ = 284958324. Its totient is φ = 46689280.

The previous prime is 124020097. The next prime is 124020101. The reversal of 124020100 is 1020421.

It can be written as a sum of positive squares in 6 ways, for example, as 9604 + 124010496 = 98^2 + 11136^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (124020101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34777 + ... + 38176.

It is an arithmetic number, because the mean of its divisors is an integer number (7915509).

Almost surely, 2^124020100 is an apocalyptic number.

124020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124020100 is an abundant number, since it is smaller than the sum of its proper divisors (160938224).

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

124020100 is a wasteful number, since it uses less digits than its factorization.

124020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72984 (or 72977 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 124020100 is about 11136.4312057319. The cubic root of 124020100 is about 498.6900376612.

Adding to 124020100 its reverse (1020421), we get a palindrome (125040521).

The spelling of 124020100 in words is "one hundred twenty-four million, twenty thousand, one hundred".