142221003 has 4 divisors (see below), whose sum is σ = 189628008. Its totient is φ = 94814000.

The previous prime is 142220999. The next prime is 142221019. The reversal of 142221003 is 300122241.

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 142221003 - 2² = 142220999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142221043) 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, 23703498 + ... + 23703503.

It is an arithmetic number, because the mean of its divisors is an integer number (47407002).

Almost surely, 2^142221003 is an apocalyptic number.

142221003 is a deficient number, since it is larger than the sum of its proper divisors (47407005).

142221003 is an equidigital number, since it uses as much as digits as its factorization.

142221003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47407004.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 142221003 is about 11925.6447624437. The cubic root of 142221003 is about 521.9808605598.

Adding to 142221003 its reverse (300122241), we get a palindrome (442343244).

It can be divided in two parts, 14222 and 1003, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 142221003 in words is "one hundred forty-two million, two hundred twenty-one thousand, three".