125434403442 has 80 divisors (see below), whose sum is σ = 286521127200. Its totient is φ = 41003392320.

The previous prime is 125434403431. The next prime is 125434403473. The reversal of 125434403442 is 244304434521.

125434403442 is a `hidden beast` number, since 1 + 2 + 543 + 4 + 40 + 34 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 125434403397 and 125434403406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3989142 + ... + 4020462.

It is an arithmetic number, because the mean of its divisors is an integer number (3581514090).

Almost surely, 2^125434403442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125434403442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143260563600).

125434403442 is an abundant number, since it is smaller than the sum of its proper divisors (161086723758).

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

125434403442 is a wasteful number, since it uses less digits than its factorization.

125434403442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31813 (or 31804 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

Adding to 125434403442 its reverse (244304434521), we get a palindrome (369738837963).

The spelling of 125434403442 in words is "one hundred twenty-five billion, four hundred thirty-four million, four hundred three thousand, four hundred forty-two".