142240042 has 40 divisors (see below), whose sum is σ = 262173600. Its totient is φ = 57714552.

The previous prime is 142240039. The next prime is 142240103. The reversal of 142240042 is 240042241.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 90459 + ... + 92017.

It is an arithmetic number, because the mean of its divisors is an integer number (6554340).

Almost surely, 2^142240042 is an apocalyptic number.

142240042 is a deficient number, since it is larger than the sum of its proper divisors (119933558).

142240042 is an equidigital number, since it uses as much as digits as its factorization.

142240042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608 (or 1587 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 142240042 is about 11926.4429734938. The cubic root of 142240042 is about 522.0041518927.

Adding to 142240042 its reverse (240042241), we get a palindrome (382282283).

The spelling of 142240042 in words is "one hundred forty-two million, two hundred forty thousand, forty-two".