142784667939 has 16 divisors (see below), whose sum is σ = 194819530752. Its totient is φ = 92970077088.

The previous prime is 142784667929. The next prime is 142784667947. The reversal of 142784667939 is 939766487241.

It is not a de Polignac number, because 142784667939 - 2⁷ = 142784667811 is a prime.

It is a super-2 number, since 2×142784667939² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142784667939.

It is not an unprimeable number, because it can be changed into a prime (142784667919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2926942 + ... + 2975324.

It is an arithmetic number, because the mean of its divisors is an integer number (12176220672).

Almost surely, 2^142784667939 is an apocalyptic number.

142784667939 is a deficient number, since it is larger than the sum of its proper divisors (52034862813).

142784667939 is a wasteful number, since it uses less digits than its factorization.

142784667939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71306.

The product of its digits is 109734912, while the sum is 66.

The spelling of 142784667939 in words is "one hundred forty-two billion, seven hundred eighty-four million, six hundred sixty-seven thousand, nine hundred thirty-nine".