20134542 has 8 divisors (see below), whose sum is σ = 40269096. Its totient is φ = 6711512.

The previous prime is 20134529. The next prime is 20134553. The reversal of 20134542 is 24543102.

It is a sphenic number, since it is the product of 3 distinct primes.

20134542 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 1677873 + ... + 1677884.

It is an arithmetic number, because the mean of its divisors is an integer number (5033637).

Almost surely, 2^20134542 is an apocalyptic number.

20134542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20134542 is a wasteful number, since it uses less digits than its factorization.

20134542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355762.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20134542 is about 4487.1529949401. The cubic root of 20134542 is about 272.0490738302.

Adding to 20134542 its reverse (24543102), we get a palindrome (44677644).

It can be divided in two parts, 2013 and 4542, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 20134542 in words is "twenty million, one hundred thirty-four thousand, five hundred forty-two".