20232742 has 8 divisors (see below), whose sum is σ = 30368232. Its totient is φ = 10110000.

The previous prime is 20232731. The next prime is 20232743. The reversal of 20232742 is 24723202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4317 + ... + 7687.

It is an arithmetic number, because the mean of its divisors is an integer number (3796029).

Almost surely, 2^20232742 is an apocalyptic number.

20232742 is a deficient number, since it is larger than the sum of its proper divisors (10135490).

20232742 is a wasteful number, since it uses less digits than its factorization.

20232742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6374.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 20232742 is about 4498.0820357126. The cubic root of 20232742 is about 272.4906351466.

Adding to 20232742 its reverse (24723202), we get a palindrome (44955944).

The spelling of 20232742 in words is "twenty million, two hundred thirty-two thousand, seven hundred forty-two".