20462242 has 4 divisors (see below), whose sum is σ = 30693366. Its totient is φ = 10231120.

The previous prime is 20462227. The next prime is 20462317. The reversal of 20462242 is 24226402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24226402 = 2 ⋅12113201.

It can be written as a sum of positive squares in only one way, i.e., 20439441 + 22801 = 4521^2 + 151^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5115559 + ... + 5115562.

Almost surely, 2^20462242 is an apocalyptic number.

20462242 is a deficient number, since it is larger than the sum of its proper divisors (10231124).

20462242 is a wasteful number, since it uses less digits than its factorization.

20462242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10231123.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 20462242 is about 4523.5209737548. The cubic root of 20462242 is about 273.5170511201.

Adding to 20462242 its reverse (24226402), we get a palindrome (44688644).

The spelling of 20462242 in words is "twenty million, four hundred sixty-two thousand, two hundred forty-two".