142945742 has 8 divisors (see below), whose sum is σ = 214511232. Its totient is φ = 71442000.

The previous prime is 142945729. The next prime is 142945771. The reversal of 142945742 is 247549241.

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

It is a junction number, because it is equal to n+sod(n) for n = 142945696 and 142945705.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 9134 + ... + 19217.

It is an arithmetic number, because the mean of its divisors is an integer number (26813904).

Almost surely, 2^142945742 is an apocalyptic number.

142945742 is a deficient number, since it is larger than the sum of its proper divisors (71565490).

142945742 is a wasteful number, since it uses less digits than its factorization.

142945742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30874.

The product of its digits is 80640, while the sum is 38.

The square root of 142945742 is about 11955.9918869159. The cubic root of 142945742 is about 522.8660066906.

The spelling of 142945742 in words is "one hundred forty-two million, nine hundred forty-five thousand, seven hundred forty-two".