20434043042 has 16 divisors (see below), whose sum is σ = 36552822912. Its totient is φ = 8376688320.

The previous prime is 20434043009. The next prime is 20434043051. The reversal of 20434043042 is 24034043402.

It is a super-2 number, since 2×20434043042² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31729559 + ... + 31730202.

It is an arithmetic number, because the mean of its divisors is an integer number (2284551432).

Almost surely, 2^20434043042 is an apocalyptic number.

20434043042 is a deficient number, since it is larger than the sum of its proper divisors (16118779870).

20434043042 is a wasteful number, since it uses less digits than its factorization.

20434043042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63459793.

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 20434043042 its reverse (24034043402), we get a palindrome (44468086444).

The spelling of 20434043042 in words is "twenty billion, four hundred thirty-four million, forty-three thousand, forty-two".