20125434042 has 32 divisors (see below), whose sum is σ = 51112214400. Its totient is φ = 5750123904.

The previous prime is 20125434041. The next prime is 20125434073. The reversal of 20125434042 is 24043452102.

20125434042 is a `hidden beast` number, since 2 + 0 + 1 + 254 + 3 + 404 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20125433997 and 20125434015.

It is not an unprimeable number, because it can be changed into a prime (20125434041) 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 15 ways as a sum of consecutive naturals, for example, 26620567 + ... + 26621322.

It is an arithmetic number, because the mean of its divisors is an integer number (1597256700).

Almost surely, 2^20125434042 is an apocalyptic number.

20125434042 is an abundant number, since it is smaller than the sum of its proper divisors (30986780358).

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

20125434042 is a wasteful number, since it uses less digits than its factorization.

20125434042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53241907 (or 53241901 counting only the distinct ones).

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

Adding to 20125434042 its reverse (24043452102), we get a palindrome (44168886144).

The spelling of 20125434042 in words is "twenty billion, one hundred twenty-five million, four hundred thirty-four thousand, forty-two".