20200442 has 4 divisors (see below), whose sum is σ = 30300666. Its totient is φ = 10100220.

The previous prime is 20200441. The next prime is 20200511. The reversal of 20200442 is 24400202.

It is a happy number.

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., 14055001 + 6145441 = 3749^2 + 2479^2 .

It is not an unprimeable number, because it can be changed into a prime (20200441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050109 + ... + 5050112.

Almost surely, 2^20200442 is an apocalyptic number.

20200442 is a deficient number, since it is larger than the sum of its proper divisors (10100224).

20200442 is a wasteful number, since it uses less digits than its factorization.

20200442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100223.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 20200442 is about 4494.4901824345. The cubic root of 20200442 is about 272.3455545427.

Adding to 20200442 its reverse (24400202), we get a palindrome (44600644).

The spelling of 20200442 in words is "twenty million, two hundred thousand, four hundred forty-two".