142121042 has 8 divisors (see below), whose sum is σ = 243636096. Its totient is φ = 60909012.

The previous prime is 142121027. The next prime is 142121051. The reversal of 142121042 is 240121241.

142121042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 142121042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5075738 + ... + 5075765.

It is an arithmetic number, because the mean of its divisors is an integer number (30454512).

Almost surely, 2^142121042 is an apocalyptic number.

142121042 is a deficient number, since it is larger than the sum of its proper divisors (101515054).

142121042 is a wasteful number, since it uses less digits than its factorization.

142121042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10151512.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 142121042 is about 11921.4530154675. The cubic root of 142121042 is about 521.8585392970.

Adding to 142121042 its reverse (240121241), we get a palindrome (382242283).

The spelling of 142121042 in words is "one hundred forty-two million, one hundred twenty-one thousand, forty-two".