142200001 has 4 divisors (see below), whose sum is σ = 142230100. Its totient is φ = 142169904.

The previous prime is 142199977. The next prime is 142200041. The reversal of 142200001 is 100002241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100002241 = 61 ⋅1639381.

It can be written as a sum of positive squares in 2 ways, for example, as 14622976 + 127577025 = 3824^2 + 11295^2 .

It is a cyclic number.

It is not a de Polignac number, because 142200001 - 2²³ = 133811393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142200041) 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 3 ways as a sum of consecutive naturals, for example, 6246 + ... + 17983.

It is an arithmetic number, because the mean of its divisors is an integer number (35557525).

Almost surely, 2^142200001 is an apocalyptic number.

It is an amenable number.

142200001 is a deficient number, since it is larger than the sum of its proper divisors (30099).

142200001 is an equidigital number, since it uses as much as digits as its factorization.

142200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30098.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 142200001 is about 11924.7641905406. The cubic root of 142200001 is about 521.9551653824.

Adding to 142200001 its reverse (100002241), we get a palindrome (242202242).

The spelling of 142200001 in words is "one hundred forty-two million, two hundred thousand, one".