20042953 has 16 divisors (see below), whose sum is σ = 23637376. Its totient is φ = 16640640.

The previous prime is 20042951. The next prime is 20042993. The reversal of 20042953 is 35924002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20042953 - 2¹ = 20042951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20042951) 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, 30850 + ... + 31492.

It is an arithmetic number, because the mean of its divisors is an integer number (1477336).

Almost surely, 2^20042953 is an apocalyptic number.

It is an amenable number.

20042953 is a deficient number, since it is larger than the sum of its proper divisors (3594423).

20042953 is an equidigital number, since it uses as much as digits as its factorization.

20042953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20042953 is about 4476.9356707462. The cubic root of 20042953 is about 271.6359433475.

Adding to 20042953 its reverse (35924002), we get a palindrome (55966955).

The spelling of 20042953 in words is "twenty million, forty-two thousand, nine hundred fifty-three".