20125134 has 12 divisors (see below), whose sum is σ = 43604496. Its totient is φ = 6708372.

The previous prime is 20125117. The next prime is 20125153. The reversal of 20125134 is 43152102.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1118063 = 20125134 / (2 + 0 + 1 + 2 + 5 + 1 + 3 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 559014 + ... + 559049.

It is an arithmetic number, because the mean of its divisors is an integer number (3633708).

Almost surely, 2^20125134 is an apocalyptic number.

20125134 is an abundant number, since it is smaller than the sum of its proper divisors (23479362).

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

20125134 is a wasteful number, since it uses less digits than its factorization.

20125134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118071 (or 1118068 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20125134 is about 4486.1045462628. The cubic root of 20125134 is about 272.0066949765.

Adding to 20125134 its reverse (43152102), we get a palindrome (63277236).

The spelling of 20125134 in words is "twenty million, one hundred twenty-five thousand, one hundred thirty-four".