20034742 has 64 divisors (see below), whose sum is σ = 39481344. Its totient is φ = 7413120.

The previous prime is 20034731. The next prime is 20034769. The reversal of 20034742 is 24743002.

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 31 ways as a sum of consecutive naturals, for example, 298993 + ... + 299059.

It is an arithmetic number, because the mean of its divisors is an integer number (616896).

Almost surely, 2^20034742 is an apocalyptic number.

20034742 is a deficient number, since it is larger than the sum of its proper divisors (19446602).

20034742 is a wasteful number, since it uses less digits than its factorization.

20034742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 20034742 is about 4476.0185433039. The cubic root of 20034742 is about 271.5988445664.

Adding to 20034742 its reverse (24743002), we get a palindrome (44777744).

The spelling of 20034742 in words is "twenty million, thirty-four thousand, seven hundred forty-two".