125443440 has 120 divisors (see below), whose sum is σ = 428566320. Its totient is φ = 32873472.

The previous prime is 125443433. The next prime is 125443457. The reversal of 125443440 is 44344521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41004 + ... + 43956.

It is an arithmetic number, because the mean of its divisors is an integer number (3571386).

Almost surely, 2^125443440 is an apocalyptic number.

125443440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125443440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214283160).

125443440 is an abundant number, since it is smaller than the sum of its proper divisors (303122880).

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

125443440 is a wasteful number, since it uses less digits than its factorization.

125443440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031 (or 3022 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 125443440 is about 11200.1535703757. The cubic root of 125443440 is about 500.5905555470.

Adding to 125443440 its reverse (44344521), we get a palindrome (169787961).

The spelling of 125443440 in words is "one hundred twenty-five million, four hundred forty-three thousand, four hundred forty".