142200257 has 4 divisors (see below), whose sum is σ = 150564996. Its totient is φ = 133835520.

The previous prime is 142200241. The next prime is 142200263. The reversal of 142200257 is 752002241.

It is a happy number.

142200257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752002241 = 853 ⋅881597.

It can be written as a sum of positive squares in 2 ways, for example, as 62473216 + 79727041 = 7904^2 + 8929^2 .

It is a cyclic number.

It is not a de Polignac number, because 142200257 - 2⁴ = 142200241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142200557) 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, 4182344 + ... + 4182377.

It is an arithmetic number, because the mean of its divisors is an integer number (37641249).

Almost surely, 2^142200257 is an apocalyptic number.

142200257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

142200257 is a deficient number, since it is larger than the sum of its proper divisors (8364739).

142200257 is an equidigital number, since it uses as much as digits as its factorization.

142200257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8364738.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 142200257 is about 11924.7749245007. The cubic root of 142200257 is about 521.9554786043.

Adding to 142200257 its reverse (752002241), we get a palindrome (894202498).

The spelling of 142200257 in words is "one hundred forty-two million, two hundred thousand, two hundred fifty-seven".