142943722866 has 96 divisors (see below), whose sum is σ = 369650234880. Its totient is φ = 40826050272.

The previous prime is 142943722861. The next prime is 142943722871. The reversal of 142943722866 is 668227349241.

It is a happy number.

142943722866 is a `hidden beast` number, since 1 + 4 + 294 + 3 + 72 + 286 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (142943722861) and next prime (142943722871).

It is a super-2 number, since 2×142943722866² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (142943722861) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8599135 + ... + 8615741.

It is an arithmetic number, because the mean of its divisors is an integer number (3850523280).

Almost surely, 2^142943722866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142943722866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184825117440).

142943722866 is an abundant number, since it is smaller than the sum of its proper divisors (226706512014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142943722866 is a wasteful number, since it uses less digits than its factorization.

142943722866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19885 (or 19872 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 142943722866 in words is "one hundred forty-two billion, nine hundred forty-three million, seven hundred twenty-two thousand, eight hundred sixty-six".