142306399 has 8 divisors (see below), whose sum is σ = 147087360. Its totient is φ = 137537400.

The previous prime is 142306397. The next prime is 142306429. The reversal of 142306399 is 993603241.

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 142306399 - 2¹ = 142306397 is a prime.

It is a super-2 number, since 2×142306399² = 40502222392694402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142306397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25722 + ... + 30760.

It is an arithmetic number, because the mean of its divisors is an integer number (18385920).

Almost surely, 2^142306399 is an apocalyptic number.

142306399 is a deficient number, since it is larger than the sum of its proper divisors (4780961).

142306399 is an equidigital number, since it uses as much as digits as its factorization.

142306399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 142306399 is about 11929.2245766437. The cubic root of 142306399 is about 522.0853133902.

The spelling of 142306399 in words is "one hundred forty-two million, three hundred six thousand, three hundred ninety-nine".