142840297 has 8 divisors (see below), whose sum is σ = 144802944. Its totient is φ = 140888928.

The previous prime is 142840289. The next prime is 142840301. The reversal of 142840297 is 792048241.

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 142840297 - 2³ = 142840289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142240297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24453 + ... + 29725.

It is an arithmetic number, because the mean of its divisors is an integer number (18100368).

Almost surely, 2^142840297 is an apocalyptic number.

It is an amenable number.

142840297 is a deficient number, since it is larger than the sum of its proper divisors (1962647).

142840297 is a wasteful number, since it uses less digits than its factorization.

142840297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 142840297 is about 11951.5813598034. The cubic root of 142840297 is about 522.7374097199.

The spelling of 142840297 in words is "one hundred forty-two million, eight hundred forty thousand, two hundred ninety-seven".