142199897 has 8 divisors (see below), whose sum is σ = 164033856. Its totient is φ = 120745872.

The previous prime is 142199879. The next prime is 142199903. The reversal of 142199897 is 798991241.

142199897 is digitally balanced in base 2, 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 cyclic number.

It is not a de Polignac number, because 142199897 - 2¹⁰ = 142198873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142199807) 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, 94178 + ... + 95675.

It is an arithmetic number, because the mean of its divisors is an integer number (20504232).

Almost surely, 2^142199897 is an apocalyptic number.

It is an amenable number.

142199897 is a deficient number, since it is larger than the sum of its proper divisors (21833959).

142199897 is a wasteful number, since it uses less digits than its factorization.

142199897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189967.

The product of its digits is 326592, while the sum is 50.

The square root of 142199897 is about 11924.7598298666. The cubic root of 142199897 is about 521.9550381360.

The spelling of 142199897 in words is "one hundred forty-two million, one hundred ninety-nine thousand, eight hundred ninety-seven".