2140042442 has 4 divisors (see below), whose sum is σ = 3210063666. Its totient is φ = 1070021220.

The previous prime is 2140042441. The next prime is 2140042481. The reversal of 2140042442 is 2442400412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2002473001 + 137569441 = 44749^2 + 11729^2 .

It is a super-2 number, since 2×2140042442² = 9159563307122646728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2140042441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535010609 + ... + 535010612.

Almost surely, 2^2140042442 is an apocalyptic number.

2140042442 is a deficient number, since it is larger than the sum of its proper divisors (1070021224).

2140042442 is a wasteful number, since it uses less digits than its factorization.

2140042442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070021223.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 2140042442 is about 46260.5927545249. The cubic root of 2140042442 is about 1288.6672616843.

Adding to 2140042442 its reverse (2442400412), we get a palindrome (4582442854).

The spelling of 2140042442 in words is "two billion, one hundred forty million, forty-two thousand, four hundred forty-two".