20753042 has 4 divisors (see below), whose sum is σ = 31129566. Its totient is φ = 10376520.

The previous prime is 20753027. The next prime is 20753059. The reversal of 20753042 is 24035702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19545241 + 1207801 = 4421^2 + 1099^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20752999 and 20753017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5188259 + ... + 5188262.

Almost surely, 2^20753042 is an apocalyptic number.

20753042 is a deficient number, since it is larger than the sum of its proper divisors (10376524).

20753042 is a wasteful number, since it uses less digits than its factorization.

20753042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10376523.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 20753042 is about 4555.5506802142. The cubic root of 20753042 is about 274.8066607986.

Adding to 20753042 its reverse (24035702), we get a palindrome (44788744).

The spelling of 20753042 in words is "twenty million, seven hundred fifty-three thousand, forty-two".