142260287 has 4 divisors (see below), whose sum is σ = 153203400. Its totient is φ = 131317176.

The previous prime is 142260263. The next prime is 142260299. The reversal of 142260287 is 782062241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 782062241 = 499 ⋅1567259.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142260287 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 (142263287) 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, 5471537 + ... + 5471562.

It is an arithmetic number, because the mean of its divisors is an integer number (38300850).

Almost surely, 2^142260287 is an apocalyptic number.

142260287 is a deficient number, since it is larger than the sum of its proper divisors (10943113).

142260287 is a wasteful number, since it uses less digits than its factorization.

142260287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10943112.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 142260287 is about 11927.2916875542. The cubic root of 142260287 is about 522.0289163040.

The spelling of 142260287 in words is "one hundred forty-two million, two hundred sixty thousand, two hundred eighty-seven".