20032442 has 4 divisors (see below), whose sum is σ = 30048666. Its totient is φ = 10016220.

The previous prime is 20032423. The next prime is 20032457. The reversal of 20032442 is 24423002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24423002 = 2 ⋅12211501.

It can be written as a sum of positive squares in only one way, i.e., 13535041 + 6497401 = 3679^2 + 2549^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20032442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5008109 + ... + 5008112.

Almost surely, 2^20032442 is an apocalyptic number.

20032442 is a deficient number, since it is larger than the sum of its proper divisors (10016224).

20032442 is a wasteful number, since it uses less digits than its factorization.

20032442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10016223.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20032442 is about 4475.7616111674. The cubic root of 20032442 is about 271.5884509337.

Adding to 20032442 its reverse (24423002), we get a palindrome (44455444).

The spelling of 20032442 in words is "twenty million, thirty-two thousand, four hundred forty-two".