142842399 has 48 divisors (see below), whose sum is σ = 235296000. Its totient is φ = 76640256.

The previous prime is 142842391. The next prime is 142842439. The reversal of 142842399 is 993248241.

It is not a de Polignac number, because 142842399 - 2³ = 142842391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142842399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142842391) 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 47 ways as a sum of consecutive naturals, for example, 555679 + ... + 555935.

It is an arithmetic number, because the mean of its divisors is an integer number (4902000).

Almost surely, 2^142842399 is an apocalyptic number.

142842399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

142842399 is a deficient number, since it is larger than the sum of its proper divisors (92453601).

142842399 is a wasteful number, since it uses less digits than its factorization.

142842399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 485 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 142842399 is about 11951.6692976337. The cubic root of 142842399 is about 522.7399738624.

The spelling of 142842399 in words is "one hundred forty-two million, eight hundred forty-two thousand, three hundred ninety-nine".