124542220 has 24 divisors (see below), whose sum is σ = 285315408. Its totient is φ = 45288000.

The previous prime is 124542203. The next prime is 124542227. The reversal of 124542220 is 22245421.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 124542191 and 124542200.

It is not an unprimeable number, because it can be changed into a prime (124542227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282831 + ... + 283270.

It is an arithmetic number, because the mean of its divisors is an integer number (11888142).

Almost surely, 2^124542220 is an apocalyptic number.

124542220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124542220 is an abundant number, since it is smaller than the sum of its proper divisors (160773188).

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

124542220 is a wasteful number, since it uses less digits than its factorization.

124542220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566121 (or 566119 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 124542220 is about 11159.8485652808. The cubic root of 124542220 is about 499.3888800358.

Adding to 124542220 its reverse (22245421), we get a palindrome (146787641).

The spelling of 124542220 in words is "one hundred twenty-four million, five hundred forty-two thousand, two hundred twenty".