20744142 has 8 divisors (see below), whose sum is σ = 41488296. Its totient is φ = 6914712.

The previous prime is 20744111. The next prime is 20744167. The reversal of 20744142 is 24144702.

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

20744142 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1728673 + ... + 1728684.

It is an arithmetic number, because the mean of its divisors is an integer number (5186037).

Almost surely, 2^20744142 is an apocalyptic number.

20744142 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.

20744142 is a wasteful number, since it uses less digits than its factorization.

20744142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457362.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 20744142 is about 4554.5737451489. The cubic root of 20744142 is about 274.7673713137.

Adding to 20744142 its reverse (24144702), we get a palindrome (44888844).

It can be divided in two parts, 2074 and 4142, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 20744142 in words is "twenty million, seven hundred forty-four thousand, one hundred forty-two".