142285237 has 4 divisors (see below), whose sum is σ = 145594240. Its totient is φ = 138976236.

The previous prime is 142285201. The next prime is 142285267. The reversal of 142285237 is 732582241.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 142285237 - 2⁷ = 142285109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142285267) 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, 1654437 + ... + 1654522.

It is an arithmetic number, because the mean of its divisors is an integer number (36398560).

Almost surely, 2^142285237 is an apocalyptic number.

It is an amenable number.

142285237 is a deficient number, since it is larger than the sum of its proper divisors (3309003).

142285237 is an equidigital number, since it uses as much as digits as its factorization.

142285237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3309002.

The product of its digits is 26880, while the sum is 34.

The square root of 142285237 is about 11928.3375622926. The cubic root of 142285237 is about 522.0594328086.

The spelling of 142285237 in words is "one hundred forty-two million, two hundred eighty-five thousand, two hundred thirty-seven".