142298909 has 8 divisors (see below), whose sum is σ = 145160352. Its totient is φ = 139454640.

The previous prime is 142298899. The next prime is 142298917. The reversal of 142298909 is 909892241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142298909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142298909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147298909) 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, 13142 + ... + 21384.

It is an arithmetic number, because the mean of its divisors is an integer number (18145044).

Almost surely, 2^142298909 is an apocalyptic number.

It is an amenable number.

142298909 is a deficient number, since it is larger than the sum of its proper divisors (2861443).

142298909 is an equidigital number, since it uses as much as digits as its factorization.

142298909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8587.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 142298909 is about 11928.9106376064. The cubic root of 142298909 is about 522.0761536063.

The spelling of 142298909 in words is "one hundred forty-two million, two hundred ninety-eight thousand, nine hundred nine".