142838001 has 12 divisors (see below), whose sum is σ = 206453520. Its totient is φ = 95164440.

The previous prime is 142837999. The next prime is 142838011. The reversal of 142838001 is 100838241.

It is not a de Polignac number, because 142838001 - 2¹ = 142837999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142838011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13270 + ... + 21488.

It is an arithmetic number, because the mean of its divisors is an integer number (17204460).

Almost surely, 2^142838001 is an apocalyptic number.

It is an amenable number.

142838001 is a deficient number, since it is larger than the sum of its proper divisors (63615519).

142838001 is a wasteful number, since it uses less digits than its factorization.

142838001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10156 (or 10153 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 142838001 is about 11951.4853051828. The cubic root of 142838001 is about 522.7346088961.

The spelling of 142838001 in words is "one hundred forty-two million, eight hundred thirty-eight thousand, one".