302140142 has 4 divisors (see below), whose sum is σ = 453210216. Its totient is φ = 151070070.

The previous prime is 302140141. The next prime is 302140151. The reversal of 302140142 is 241041203.

302140142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241041203 = 13 ⋅18541631.

It is a self number, because there is not a number n which added to its sum of digits gives 302140142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302140141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75535034 + ... + 75535037.

It is an arithmetic number, because the mean of its divisors is an integer number (113302554).

Almost surely, 2^302140142 is an apocalyptic number.

302140142 is a deficient number, since it is larger than the sum of its proper divisors (151070074).

302140142 is a wasteful number, since it uses less digits than its factorization.

302140142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151070073.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 302140142 is about 17382.1788622716. The cubic root of 302140142 is about 671.0210480670.

Adding to 302140142 its reverse (241041203), we get a palindrome (543181345).

The spelling of 302140142 in words is "three hundred two million, one hundred forty thousand, one hundred forty-two".