20001400042 has 8 divisors (see below), whose sum is σ = 32309953956. Its totient is φ = 9231415392.

The previous prime is 20001400039. The next prime is 20001400051. The reversal of 20001400042 is 24000410002.

It can be written as a sum of positive squares in 2 ways, for example, as 19993677201 + 7722841 = 141399^2 + 2779^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 20001399995 and 20001400031.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384642283 + ... + 384642334.

Almost surely, 2^20001400042 is an apocalyptic number.

20001400042 is a deficient number, since it is larger than the sum of its proper divisors (12308553914).

20001400042 is a wasteful number, since it uses less digits than its factorization.

20001400042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769284632.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20001400042 its reverse (24000410002), we get a palindrome (44001810044).

The spelling of 20001400042 in words is "twenty billion, one million, four hundred thousand, forty-two".