142403443 has 16 divisors (see below), whose sum is σ = 175976640. Its totient is φ = 112214016.

The previous prime is 142403431. The next prime is 142403447. The reversal of 142403443 is 344304241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142403443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142403447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20343 + ... + 26431.

It is an arithmetic number, because the mean of its divisors is an integer number (10998540).

Almost surely, 2^142403443 is an apocalyptic number.

142403443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

142403443 is a deficient number, since it is larger than the sum of its proper divisors (33573197).

142403443 is a wasteful number, since it uses less digits than its factorization.

142403443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6366.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 142403443 is about 11933.2913732968. The cubic root of 142403443 is about 522.2039628560.

Adding to 142403443 its reverse (344304241), we get a palindrome (486707684).

The spelling of 142403443 in words is "one hundred forty-two million, four hundred three thousand, four hundred forty-three".