142253251 has 4 divisors (see below), whose sum is σ = 162575152. Its totient is φ = 121931352.

The previous prime is 142253249. The next prime is 142253273. The reversal of 142253251 is 152352241.

142253251 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.

It is a cyclic number.

It is not a de Polignac number, because 142253251 - 2¹ = 142253249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142253201) 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, 10160940 + ... + 10160953.

It is an arithmetic number, because the mean of its divisors is an integer number (40643788).

Almost surely, 2^142253251 is an apocalyptic number.

142253251 is a deficient number, since it is larger than the sum of its proper divisors (20321901).

142253251 is an equidigital number, since it uses as much as digits as its factorization.

142253251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20321900.

The product of its digits is 2400, while the sum is 25.

The square root of 142253251 is about 11926.9967301077. The cubic root of 142253251 is about 522.0203098825.

The spelling of 142253251 in words is "one hundred forty-two million, two hundred fifty-three thousand, two hundred fifty-one".