125140420 has 24 divisors (see below), whose sum is σ = 267755544. Its totient is φ = 49111296.

The previous prime is 125140409. The next prime is 125140429. The reversal of 125140420 is 24041521.

It can be written as a sum of positive squares in 4 ways, for example, as 47665216 + 77475204 = 6904^2 + 8802^2 .

It is not an unprimeable number, because it can be changed into a prime (125140429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57969 + ... + 60088.

It is an arithmetic number, because the mean of its divisors is an integer number (11156481).

Almost surely, 2^125140420 is an apocalyptic number.

125140420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125140420 is an abundant number, since it is smaller than the sum of its proper divisors (142615124).

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

125140420 is a wasteful number, since it uses less digits than its factorization.

125140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118119 (or 118117 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 125140420 is about 11186.6178981853. The cubic root of 125140420 is about 500.1871566027.

Adding to 125140420 its reverse (24041521), we get a palindrome (149181941).

The spelling of 125140420 in words is "one hundred twenty-five million, one hundred forty thousand, four hundred twenty".