20424402342 has 96 divisors (see below), whose sum is σ = 46557957600. Its totient is φ = 6636396096.

The previous prime is 20424402337. The next prime is 20424402347. The reversal of 20424402342 is 24320442402.

20424402342 is a `hidden beast` number, since 2 + 0 + 424 + 4 + 0 + 234 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (20424402337) and next prime (20424402347).

It is a super-2 number, since 2×20424402342² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424402347) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26421868 + ... + 26422640.

It is an arithmetic number, because the mean of its divisors is an integer number (484978725).

Almost surely, 2^20424402342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20424402342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23278978800).

20424402342 is an abundant number, since it is smaller than the sum of its proper divisors (26133555258).

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

20424402342 is a wasteful number, since it uses less digits than its factorization.

20424402342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 20424402342 its reverse (24320442402), we get a palindrome (44744844744).

The spelling of 20424402342 in words is "twenty billion, four hundred twenty-four million, four hundred two thousand, three hundred forty-two".