142442003 has 4 divisors (see below), whose sum is σ = 155391288. Its totient is φ = 129492720.

The previous prime is 142441973. The next prime is 142442023. The reversal of 142442003 is 300244241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142442003 - 2¹⁶ = 142376467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142442023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6474626 + ... + 6474647.

It is an arithmetic number, because the mean of its divisors is an integer number (38847822).

Almost surely, 2^142442003 is an apocalyptic number.

142442003 is a deficient number, since it is larger than the sum of its proper divisors (12949285).

142442003 is a wasteful number, since it uses less digits than its factorization.

142442003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12949284.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 142442003 is about 11934.9069120794. The cubic root of 142442003 is about 522.2510927268.

Adding to 142442003 its reverse (300244241), we get a palindrome (442686244).

The spelling of 142442003 in words is "one hundred forty-two million, four hundred forty-two thousand, three".