20143021042 has 8 divisors (see below), whose sum is σ = 30264807132. Its totient is φ = 10054752000.

The previous prime is 20143021037. The next prime is 20143021043. The reversal of 20143021042 is 24012034102.

It can be written as a sum of positive squares in 2 ways, for example, as 18324766161 + 1818254881 = 135369^2 + 42641^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20143021043) 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, 8377759 + ... + 8380162.

Almost surely, 2^20143021042 is an apocalyptic number.

20143021042 is a deficient number, since it is larger than the sum of its proper divisors (10121786090).

20143021042 is a wasteful number, since it uses less digits than its factorization.

20143021042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16758524.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20143021042 its reverse (24012034102), we get a palindrome (44155055144).

The spelling of 20143021042 in words is "twenty billion, one hundred forty-three million, twenty-one thousand, forty-two".