142345287 has 12 divisors (see below), whose sum is σ = 234982800. Its totient is φ = 81340128.

The previous prime is 142345261. The next prime is 142345303. The reversal of 142345287 is 782543241.

It is a happy number.

It is not a de Polignac number, because 142345287 - 2⁶ = 142345223 is a prime.

It is a super-2 number, since 2×142345287² = 40524361462224738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142345237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1129662 + ... + 1129787.

It is an arithmetic number, because the mean of its divisors is an integer number (19581900).

Almost surely, 2^142345287 is an apocalyptic number.

142345287 is a deficient number, since it is larger than the sum of its proper divisors (92637513).

142345287 is a wasteful number, since it uses less digits than its factorization.

142345287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259462 (or 2259459 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 142345287 is about 11930.8544119858. The cubic root of 142345287 is about 522.1328657249.

The spelling of 142345287 in words is "one hundred forty-two million, three hundred forty-five thousand, two hundred eighty-seven".