142855487 has 2 divisors, whose sum is σ = 142855488. Its totient is φ = 142855486.

The previous prime is 142855477. The next prime is 142855499. The reversal of 142855487 is 784558241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142855487 - 2⁶ = 142855423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142855477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71427743 + 71427744.

It is an arithmetic number, because the mean of its divisors is an integer number (71427744).

Almost surely, 2^142855487 is an apocalyptic number.

142855487 is a deficient number, since it is larger than the sum of its proper divisors (1).

142855487 is an equidigital number, since it uses as much as digits as its factorization.

142855487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 358400, while the sum is 44.

The square root of 142855487 is about 11952.2168236692. The cubic root of 142855487 is about 522.7559388044.

The spelling of 142855487 in words is "one hundred forty-two million, eight hundred fifty-five thousand, four hundred eighty-seven".