142218863281 has 8 divisors (see below), whose sum is σ = 155150718624. Its totient is φ = 129287485920.

The previous prime is 142218863273. The next prime is 142218863291. The reversal of 142218863281 is 182368812241.

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 142218863281 - 2³ = 142218863273 is a prime.

It is a super-2 number, since 2×142218863281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142218863291) 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, 832285 + ... + 988501.

It is an arithmetic number, because the mean of its divisors is an integer number (19393839828).

Almost surely, 2^142218863281 is an apocalyptic number.

142218863281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142218863281 is a deficient number, since it is larger than the sum of its proper divisors (12931855343).

142218863281 is a wasteful number, since it uses less digits than its factorization.

142218863281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238991.

The product of its digits is 294912, while the sum is 46.

The spelling of 142218863281 in words is "one hundred forty-two billion, two hundred eighteen million, eight hundred sixty-three thousand, two hundred eighty-one".