125820030 has 32 divisors (see below), whose sum is σ = 345106944. Its totient is φ = 28758816.

The previous prime is 125820029. The next prime is 125820031. The reversal of 125820030 is 30028521.

It is an interprime number because it is at equal distance from previous prime (125820029) and next prime (125820031).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 125819979 and 125820006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125820031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299362 + ... + 299781.

It is an arithmetic number, because the mean of its divisors is an integer number (10784592).

Almost surely, 2^125820030 is an apocalyptic number.

125820030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125820030 is an abundant number, since it is smaller than the sum of its proper divisors (219286914).

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

125820030 is a wasteful number, since it uses less digits than its factorization.

125820030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599160.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 125820030 is about 11216.9527947656. The cubic root of 125820030 is about 501.0909910788.

Adding to 125820030 its reverse (30028521), we get a palindrome (155848551).

The spelling of 125820030 in words is "one hundred twenty-five million, eight hundred twenty thousand, thirty".