20240434143 has 20 divisors (see below), whose sum is σ = 30402780408. Its totient is φ = 13419062640.

The previous prime is 20240434139. The next prime is 20240434147. The reversal of 20240434143 is 34143404202.

It is a happy number.

20240434143 is a `hidden beast` number, since 2 + 0 + 240 + 4 + 3 + 414 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (20240434139) and next prime (20240434147).

It is not a de Polignac number, because 20240434143 - 2² = 20240434139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20240434147) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 675621 + ... + 704942.

Almost surely, 2^20240434143 is an apocalyptic number.

20240434143 is a deficient number, since it is larger than the sum of its proper divisors (10162346265).

20240434143 is a wasteful number, since it uses less digits than its factorization.

20240434143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380756 (or 1380747 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20240434143 its reverse (34143404202), we get a palindrome (54383838345).

The spelling of 20240434143 in words is "twenty billion, two hundred forty million, four hundred thirty-four thousand, one hundred forty-three".