142075639 has 4 divisors (see below), whose sum is σ = 142104856. Its totient is φ = 142046424.

The previous prime is 142075631. The next prime is 142075651. The reversal of 142075639 is 936570241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936570241 = 757 ⋅1237213.

It is a cyclic number.

It is not a de Polignac number, because 142075639 - 2³ = 142075631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142075598 and 142075607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142075631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5364 + ... + 17689.

It is an arithmetic number, because the mean of its divisors is an integer number (35526214).

Almost surely, 2^142075639 is an apocalyptic number.

142075639 is a deficient number, since it is larger than the sum of its proper divisors (29217).

142075639 is an equidigital number, since it uses as much as digits as its factorization.

142075639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29216.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 142075639 is about 11919.5486072250. The cubic root of 142075639 is about 521.8029611632.

The spelling of 142075639 in words is "one hundred forty-two million, seventy-five thousand, six hundred thirty-nine".