142941909 has 8 divisors (see below), whose sum is σ = 207915552. Its totient is φ = 86631440.

The previous prime is 142941907. The next prime is 142941913. The reversal of 142941909 is 909149241.

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

It is a cyclic number.

It is not a de Polignac number, because 142941909 - 2¹ = 142941907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142941907) 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, 2165754 + ... + 2165819.

It is an arithmetic number, because the mean of its divisors is an integer number (25989444).

Almost surely, 2^142941909 is an apocalyptic number.

It is an amenable number.

142941909 is a deficient number, since it is larger than the sum of its proper divisors (64973643).

142941909 is a wasteful number, since it uses less digits than its factorization.

142941909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4331587.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 142941909 is about 11955.8315896470. The cubic root of 142941909 is about 522.8613332080.

The spelling of 142941909 in words is "one hundred forty-two million, nine hundred forty-one thousand, nine hundred nine".