142139466 has 24 divisors (see below), whose sum is σ = 351964704. Its totient is φ = 40611240.

The previous prime is 142139453. The next prime is 142139477. The reversal of 142139466 is 664931241.

It is a self number, because there is not a number n which added to its sum of digits gives 142139466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 563920 + ... + 564171.

It is an arithmetic number, because the mean of its divisors is an integer number (14665196).

Almost surely, 2^142139466 is an apocalyptic number.

142139466 is an abundant number, since it is smaller than the sum of its proper divisors (209825238).

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

142139466 is a wasteful number, since it uses less digits than its factorization.

142139466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128106 (or 1128103 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 142139466 is about 11922.2257150249. The cubic root of 142139466 is about 521.8810888696.

The spelling of 142139466 in words is "one hundred forty-two million, one hundred thirty-nine thousand, four hundred sixty-six".