20001226742 has 16 divisors (see below), whose sum is σ = 35778592512. Its totient is φ = 8199260520.

The previous prime is 20001226709. The next prime is 20001226823. The reversal of 20001226742 is 24762210002.

It is a congruent number.

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, 31057484 + ... + 31058127.

It is an arithmetic number, because the mean of its divisors is an integer number (2236162032).

Almost surely, 2^20001226742 is an apocalyptic number.

20001226742 is a deficient number, since it is larger than the sum of its proper divisors (15777365770).

20001226742 is a wasteful number, since it uses less digits than its factorization.

20001226742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62115643.

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 20001226742 its reverse (24762210002), we get a palindrome (44763436744).

The spelling of 20001226742 in words is "twenty billion, one million, two hundred twenty-six thousand, seven hundred forty-two".