20316042 has 32 divisors (see below), whose sum is σ = 45302400. Its totient is φ = 6748704.

The previous prime is 20316041. The next prime is 20316077. The reversal of 20316042 is 24061302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20316041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23278 + ... + 24134.

It is an arithmetic number, because the mean of its divisors is an integer number (1415700).

Almost surely, 2^20316042 is an apocalyptic number.

20316042 is an abundant number, since it is smaller than the sum of its proper divisors (24986358).

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

20316042 is a wasteful number, since it uses less digits than its factorization.

20316042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20316042 is about 4507.3320268203. The cubic root of 20316042 is about 272.8640791814.

Adding to 20316042 its reverse (24061302), we get a palindrome (44377344).

The spelling of 20316042 in words is "twenty million, three hundred sixteen thousand, forty-two".