142051609 has 8 divisors (see below), whose sum is σ = 171894528. Its totient is φ = 114596160.

The previous prime is 142051597. The next prime is 142051631. The reversal of 142051609 is 906150241.

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

It is a de Polignac number, because none of the positive numbers 2^k-142051609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142051699) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 596737 + ... + 596974.

It is an arithmetic number, because the mean of its divisors is an integer number (21486816).

Almost surely, 2^142051609 is an apocalyptic number.

It is an amenable number.

142051609 is a deficient number, since it is larger than the sum of its proper divisors (29842919).

142051609 is a wasteful number, since it uses less digits than its factorization.

142051609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193735.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 142051609 is about 11918.5405566286. The cubic root of 142051609 is about 521.7735410782.

The spelling of 142051609 in words is "one hundred forty-two million, fifty-one thousand, six hundred nine".