20340421262 has 12 divisors (see below), whose sum is σ = 35491959720. Its totient is φ = 8717323356.

The previous prime is 20340421261. The next prime is 20340421271. The reversal of 20340421262 is 26212404302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340421261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103777562 + ... + 103777757.

It is an arithmetic number, because the mean of its divisors is an integer number (2957663310).

Almost surely, 2^20340421262 is an apocalyptic number.

20340421262 is a deficient number, since it is larger than the sum of its proper divisors (15151538458).

20340421262 is a wasteful number, since it uses less digits than its factorization.

20340421262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207555335 (or 207555328 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 20340421262 its reverse (26212404302), we get a palindrome (46552825564).

The spelling of 20340421262 in words is "twenty billion, three hundred forty million, four hundred twenty-one thousand, two hundred sixty-two".