20202043242 has 16 divisors (see below), whose sum is σ = 41389552512. Its totient is φ = 6569770080.

The previous prime is 20202043241. The next prime is 20202043243. The reversal of 20202043242 is 24234020202.

It is an interprime number because it is at equal distance from previous prime (20202043241) and next prime (20202043243).

It is not an unprimeable number, because it can be changed into a prime (20202043241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41060818 + ... + 41061309.

It is an arithmetic number, because the mean of its divisors is an integer number (2586847032).

Almost surely, 2^20202043242 is an apocalyptic number.

20202043242 is an abundant number, since it is smaller than the sum of its proper divisors (21187509270).

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

20202043242 is a wasteful number, since it uses less digits than its factorization.

20202043242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82122173.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 20202043242 its reverse (24234020202), we get a palindrome (44436063444).

The spelling of 20202043242 in words is "twenty billion, two hundred two million, forty-three thousand, two hundred forty-two".