142142201 has 4 divisors (see below), whose sum is σ = 142166400. Its totient is φ = 142118004.

The previous prime is 142142183. The next prime is 142142227. The reversal of 142142201 is 102241241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102241241 = 167 ⋅612223.

It is a cyclic number.

It is not a de Polignac number, because 142142201 - 2²² = 137947897 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 142142201.

It is not an unprimeable number, because it can be changed into a prime (142142291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2960 + ... + 17118.

It is an arithmetic number, because the mean of its divisors is an integer number (35541600).

Almost surely, 2^142142201 is an apocalyptic number.

It is an amenable number.

142142201 is a deficient number, since it is larger than the sum of its proper divisors (24199).

142142201 is a wasteful number, since it uses less digits than its factorization.

142142201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24198.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 142142201 is about 11922.3404162102. The cubic root of 142142201 is about 521.8844361352.

Adding to 142142201 its reverse (102241241), we get a palindrome (244383442).

The spelling of 142142201 in words is "one hundred forty-two million, one hundred forty-two thousand, two hundred one".