20112142242 has 32 divisors (see below), whose sum is σ = 41530466304. Its totient is φ = 6486440400.

The previous prime is 20112142201. The next prime is 20112142243. The reversal of 20112142242 is 24224121102.

It is not an unprimeable number, because it can be changed into a prime (20112142243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1292593 + ... + 1308059.

It is an arithmetic number, because the mean of its divisors is an integer number (1297827072).

Almost surely, 2^20112142242 is an apocalyptic number.

20112142242 is an abundant number, since it is smaller than the sum of its proper divisors (21418324062).

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

20112142242 is a wasteful number, since it uses less digits than its factorization.

20112142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22494.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20112142242 its reverse (24224121102), we get a palindrome (44336263344).

The spelling of 20112142242 in words is "twenty billion, one hundred twelve million, one hundred forty-two thousand, two hundred forty-two".