20421230414 has 8 divisors (see below), whose sum is σ = 32988141480. Its totient is φ = 9425183256.

The previous prime is 20421230413. The next prime is 20421230429. The reversal of 20421230414 is 41403212402.

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

It is a super-2 number, since 2×20421230414² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20421230414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20421230413) 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, 392715944 + ... + 392715995.

It is an arithmetic number, because the mean of its divisors is an integer number (4123517685).

Almost surely, 2^20421230414 is an apocalyptic number.

20421230414 is a deficient number, since it is larger than the sum of its proper divisors (12566911066).

20421230414 is a wasteful number, since it uses less digits than its factorization.

20421230414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785431954.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20421230414 its reverse (41403212402), we get a palindrome (61824442816).

The spelling of 20421230414 in words is "twenty billion, four hundred twenty-one million, two hundred thirty thousand, four hundred fourteen".