20142042 has 32 divisors (see below), whose sum is σ = 42928704. Its totient is φ = 6278400.

The previous prime is 20142019. The next prime is 20142047. The reversal of 20142042 is 24024102.

It is not an unprimeable number, because it can be changed into a prime (20142047) 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, 17917 + ... + 19007.

It is an arithmetic number, because the mean of its divisors is an integer number (1341522).

Almost surely, 2^20142042 is an apocalyptic number.

20142042 is an abundant number, since it is smaller than the sum of its proper divisors (22786662).

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

20142042 is a wasteful number, since it uses less digits than its factorization.

20142042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 20142042 is about 4487.9886363492. The cubic root of 20142042 is about 272.0828485371.

Adding to 20142042 its reverse (24024102), we get a palindrome (44166144).

The spelling of 20142042 in words is "twenty million, one hundred forty-two thousand, forty-two".