125142005440 has 56 divisors (see below), whose sum is σ = 298134450720. Its totient is φ = 50033276928.

The previous prime is 125142005393. The next prime is 125142005449. The reversal of 125142005440 is 44500241521.

It is a junction number, because it is equal to n+sod(n) for n = 125142005399 and 125142005408.

It is not an unprimeable number, because it can be changed into a prime (125142005449) 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, 598141 + ... + 779779.

Almost surely, 2^125142005440 is an apocalyptic number.

125142005440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125142005440 is an abundant number, since it is smaller than the sum of its proper divisors (172992445280).

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

125142005440 is a wasteful number, since it uses less digits than its factorization.

125142005440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183809 (or 183799 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 125142005440 its reverse (44500241521), we get a palindrome (169642246961).

The spelling of 125142005440 in words is "one hundred twenty-five billion, one hundred forty-two million, five thousand, four hundred forty".