142303402 has 8 divisors (see below), whose sum is σ = 213923556. Its totient is φ = 70995552.

The previous prime is 142303393. The next prime is 142303409. The reversal of 142303402 is 204303241.

It can be written as a sum of positive squares in 2 ways, for example, as 137334961 + 4968441 = 11719^2 + 2229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 142303402.

It is not an unprimeable number, because it can be changed into a prime (142303409) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 76933 + ... + 78760.

Almost surely, 2^142303402 is an apocalyptic number.

142303402 is a deficient number, since it is larger than the sum of its proper divisors (71620154).

142303402 is a wasteful number, since it uses less digits than its factorization.

142303402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156152.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 142303402 is about 11929.0989601059. The cubic root of 142303402 is about 522.0816482923.

Adding to 142303402 its reverse (204303241), we get a palindrome (346606643).

The spelling of 142303402 in words is "one hundred forty-two million, three hundred three thousand, four hundred two".