142448237 has 4 divisors (see below), whose sum is σ = 144783516. Its totient is φ = 140112960.

The previous prime is 142448191. The next prime is 142448239. The reversal of 142448237 is 732844241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22458121 + 119990116 = 4739^2 + 10954^2 .

It is a cyclic number.

It is not a de Polignac number, because 142448237 - 2¹⁴ = 142431853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142448197 and 142448206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142448239) 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, 1167548 + ... + 1167669.

It is an arithmetic number, because the mean of its divisors is an integer number (36195879).

Almost surely, 2^142448237 is an apocalyptic number.

It is an amenable number.

142448237 is a deficient number, since it is larger than the sum of its proper divisors (2335279).

142448237 is an equidigital number, since it uses as much as digits as its factorization.

142448237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335278.

The product of its digits is 43008, while the sum is 35.

The square root of 142448237 is about 11935.1680759007. The cubic root of 142448237 is about 522.2587114201.

The spelling of 142448237 in words is "one hundred forty-two million, four hundred forty-eight thousand, two hundred thirty-seven".