142135237 has 8 divisors (see below), whose sum is σ = 143700480. Its totient is φ = 140574960.

The previous prime is 142135229. The next prime is 142135247. The reversal of 142135237 is 732531241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142135237 - 2³ = 142135229 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 (142135247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93312 + ... + 94822.

It is an arithmetic number, because the mean of its divisors is an integer number (17962560).

Almost surely, 2^142135237 is an apocalyptic number.

It is an amenable number.

142135237 is a deficient number, since it is larger than the sum of its proper divisors (1565243).

142135237 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (142135236) it forms an eRAP, since the sums of their prime factors are consecutive (2482 and 2483).

142135237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483.

The product of its digits is 5040, while the sum is 28.

The square root of 142135237 is about 11922.0483558825. The cubic root of 142135237 is about 521.8759130681.

Adding to 142135237 its reverse (732531241), we get a palindrome (874666478).

The spelling of 142135237 in words is "one hundred forty-two million, one hundred thirty-five thousand, two hundred thirty-seven".