124128030 has 64 divisors (see below), whose sum is σ = 331204608. Its totient is φ = 29566080.

The previous prime is 124128023. The next prime is 124128031. The reversal of 124128030 is 30821421.

It is a junction number, because it is equal to n+sod(n) for n = 124127988 and 124128006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124128031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6957 + ... + 17223.

It is an arithmetic number, because the mean of its divisors is an integer number (5175072).

Almost surely, 2^124128030 is an apocalyptic number.

124128030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 124128030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165602304).

124128030 is an abundant number, since it is smaller than the sum of its proper divisors (207076578).

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

124128030 is a wasteful number, since it uses less digits than its factorization.

124128030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10321.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 124128030 is about 11141.2759592427. The cubic root of 124128030 is about 498.8346594060.

Adding to 124128030 its reverse (30821421), we get a palindrome (154949451).

The spelling of 124128030 in words is "one hundred twenty-four million, one hundred twenty-eight thousand, thirty".