142148686 has 4 divisors (see below), whose sum is σ = 213223032. Its totient is φ = 71074342.

The previous prime is 142148663. The next prime is 142148693. The reversal of 142148686 is 686841241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 686841241 = 19 ⋅36149539.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 35537170 + ... + 35537173.

It is an arithmetic number, because the mean of its divisors is an integer number (53305758).

Almost surely, 2^142148686 is an apocalyptic number.

142148686 is a deficient number, since it is larger than the sum of its proper divisors (71074346).

142148686 is an equidigital number, since it uses as much as digits as its factorization.

142148686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71074345.

The product of its digits is 73728, while the sum is 40.

The square root of 142148686 is about 11922.6123815211. The cubic root of 142148686 is about 521.8923727158.

The spelling of 142148686 in words is "one hundred forty-two million, one hundred forty-eight thousand, six hundred eighty-six".