20233143242 has 16 divisors (see below), whose sum is σ = 32688339432. Its totient is φ = 9337222080.

The previous prime is 20233143241. The next prime is 20233143257. The reversal of 20233143242 is 24234133202.

It can be written as a sum of positive squares in 4 ways, for example, as 9892490521 + 10340652721 = 99461^2 + 101689^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (20233143241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188948 + ... + 275984.

Almost surely, 2^20233143242 is an apocalyptic number.

20233143242 is a deficient number, since it is larger than the sum of its proper divisors (12455196190).

20233143242 is a wasteful number, since it uses less digits than its factorization.

20233143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95993.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20233143242 its reverse (24234133202), we get a palindrome (44467276444).

The spelling of 20233143242 in words is "twenty billion, two hundred thirty-three million, one hundred forty-three thousand, two hundred forty-two".