124042120 has 32 divisors (see below), whose sum is σ = 280149120. Its totient is φ = 49429440.

The previous prime is 124042117. The next prime is 124042123. The reversal of 124042120 is 21240421.

It is an interprime number because it is at equal distance from previous prime (124042117) and next prime (124042123).

It is a junction number, because it is equal to n+sod(n) for n = 124042094 and 124042103.

It is not an unprimeable number, because it can be changed into a prime (124042123) 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, 5119 + ... + 16561.

It is an arithmetic number, because the mean of its divisors is an integer number (8754660).

Almost surely, 2^124042120 is an apocalyptic number.

124042120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124042120 is an abundant number, since it is smaller than the sum of its proper divisors (156107000).

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

124042120 is a wasteful number, since it uses less digits than its factorization.

124042120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11725 (or 11721 counting only the distinct ones).

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

The square root of 124042120 is about 11137.4198089145. The cubic root of 124042120 is about 498.7195503633.

Adding to 124042120 its reverse (21240421), we get a palindrome (145282541).

The spelling of 124042120 in words is "one hundred twenty-four million, forty-two thousand, one hundred twenty".