142217244487 has 4 divisors (see below), whose sum is σ = 142218442080. Its totient is φ = 142216046896.

The previous prime is 142217244479. The next prime is 142217244517. The reversal of 142217244487 is 784442712241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784442712241 = 19 ⋅41286458539.

It is a cyclic number.

It is not a de Polignac number, because 142217244487 - 2³ = 142217244479 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 (142217244427) 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, 398287 + ... + 665632.

It is an arithmetic number, because the mean of its divisors is an integer number (35554610520).

Almost surely, 2^142217244487 is an apocalyptic number.

142217244487 is a deficient number, since it is larger than the sum of its proper divisors (1197593).

142217244487 is a wasteful number, since it uses less digits than its factorization.

142217244487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197592.

The product of its digits is 802816, while the sum is 46.

The spelling of 142217244487 in words is "one hundred forty-two billion, two hundred seventeen million, two hundred forty-four thousand, four hundred eighty-seven".