142321503 has 8 divisors (see below), whose sum is σ = 190326448. Its totient is φ = 94598784.

The previous prime is 142321477. The next prime is 142321513. The reversal of 142321503 is 305123241.

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

It is not a de Polignac number, because 142321503 - 2⁸ = 142321247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142321503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142321513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69376 + ... + 71397.

It is an arithmetic number, because the mean of its divisors is an integer number (23790806).

Almost surely, 2^142321503 is an apocalyptic number.

142321503 is a deficient number, since it is larger than the sum of its proper divisors (48004945).

142321503 is a wasteful number, since it uses less digits than its factorization.

142321503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141113.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 142321503 is about 11929.8576269795. The cubic root of 142321503 is about 522.1037836245.

Adding to 142321503 its reverse (305123241), we get a palindrome (447444744).

The spelling of 142321503 in words is "one hundred forty-two million, three hundred twenty-one thousand, five hundred three".