20042716 has 6 divisors (see below), whose sum is σ = 35074760. Its totient is φ = 10021356.

The previous prime is 20042669. The next prime is 20042717. The reversal of 20042716 is 61724002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2505336 + ... + 2505343.

Almost surely, 2^20042716 is an apocalyptic number.

It is an amenable number.

20042716 is a deficient number, since it is larger than the sum of its proper divisors (15032044).

20042716 is a wasteful number, since it uses less digits than its factorization.

20042716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010683 (or 5010681 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20042716 is about 4476.9092016703. The cubic root of 20042716 is about 271.6348726807.

Adding to 20042716 its reverse (61724002), we get a palindrome (81766718).

The spelling of 20042716 in words is "twenty million, forty-two thousand, seven hundred sixteen".