303243142 has 4 divisors (see below), whose sum is σ = 454864716. Its totient is φ = 151621570.

The previous prime is 303243137. The next prime is 303243167. The reversal of 303243142 is 241342303.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241342303 = 149 ⋅1619747.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75810784 + ... + 75810787.

It is an arithmetic number, because the mean of its divisors is an integer number (113716179).

Almost surely, 2^303243142 is an apocalyptic number.

303243142 is a deficient number, since it is larger than the sum of its proper divisors (151621574).

303243142 is a wasteful number, since it uses less digits than its factorization.

303243142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151621573.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 303243142 is about 17413.8778564684. The cubic root of 303243142 is about 671.8366049146.

Adding to 303243142 its reverse (241342303), we get a palindrome (544585445).

The spelling of 303243142 in words is "three hundred three million, two hundred forty-three thousand, one hundred forty-two".