20463242 has 4 divisors (see below), whose sum is σ = 30694866. Its totient is φ = 10231620.

The previous prime is 20463239. The next prime is 20463251. The reversal of 20463242 is 24236402.

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., 17397241 + 3066001 = 4171^2 + 1751^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5115809 + ... + 5115812.

Almost surely, 2^20463242 is an apocalyptic number.

20463242 is a deficient number, since it is larger than the sum of its proper divisors (10231624).

20463242 is a wasteful number, since it uses less digits than its factorization.

20463242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10231623.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 20463242 is about 4523.6315057706. The cubic root of 20463242 is about 273.5215066859.

Adding to 20463242 its reverse (24236402), we get a palindrome (44699644).

The spelling of 20463242 in words is "twenty million, four hundred sixty-three thousand, two hundred forty-two".