124142020 has 12 divisors (see below), whose sum is σ = 260698284. Its totient is φ = 49656800.

The previous prime is 124141999. The next prime is 124142023. The reversal of 124142020 is 20241421.

It can be written as a sum of positive squares in 2 ways, for example, as 24621444 + 99520576 = 4962^2 + 9976^2 .

It is a super-2 number, since 2×124142020² = 30822482259360800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 124141985 and 124142003.

It is not an unprimeable number, because it can be changed into a prime (124142023) 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, 3103531 + ... + 3103570.

It is an arithmetic number, because the mean of its divisors is an integer number (21724857).

Almost surely, 2^124142020 is an apocalyptic number.

124142020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124142020 is an abundant number, since it is smaller than the sum of its proper divisors (136556264).

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

124142020 is a wasteful number, since it uses less digits than its factorization.

124142020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6207110 (or 6207108 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 124142020 is about 11141.9037870554. The cubic root of 124142020 is about 498.8533992902.

Adding to 124142020 its reverse (20241421), we get a palindrome (144383441).

The spelling of 124142020 in words is "one hundred twenty-four million, one hundred forty-two thousand, twenty".