20142403242 has 48 divisors (see below), whose sum is σ = 43754527008. Its totient is φ = 6178835520.

The previous prime is 20142403159. The next prime is 20142403261. The reversal of 20142403242 is 24230424102.

It is a super-2 number, since 2×20142403242² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305628 + ... + 365640.

It is an arithmetic number, because the mean of its divisors is an integer number (911552646).

Almost surely, 2^20142403242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20142403242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21877263504).

20142403242 is an abundant number, since it is smaller than the sum of its proper divisors (23612123766).

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

20142403242 is a wasteful number, since it uses less digits than its factorization.

20142403242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60375 (or 60362 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20142403242 its reverse (24230424102), we get a palindrome (44372827344).

The spelling of 20142403242 in words is "twenty billion, one hundred forty-two million, four hundred three thousand, two hundred forty-two".