20424020412 has 24 divisors (see below), whose sum is σ = 47722348800. Its totient is φ = 6798535216.

The previous prime is 20424020411. The next prime is 20424020413. The reversal of 20424020412 is 21402042402.

It is an interprime number because it is at equal distance from previous prime (20424020411) and next prime (20424020413).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424020411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1174962 + ... + 1192217.

It is an arithmetic number, because the mean of its divisors is an integer number (1988431200).

Almost surely, 2^20424020412 is an apocalyptic number.

It is an amenable number.

20424020412 is an abundant number, since it is smaller than the sum of its proper divisors (27298328388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20424020412 is a wasteful number, since it uses less digits than its factorization.

20424020412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367905 (or 2367903 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 20424020412 its reverse (21402042402), we get a palindrome (41826062814).

The spelling of 20424020412 in words is "twenty billion, four hundred twenty-four million, twenty thousand, four hundred twelve".