142223403 has 32 divisors (see below), whose sum is σ = 223027200. Its totient is φ = 78928416.

The previous prime is 142223401. The next prime is 142223407. The reversal of 142223403 is 304322241.

It is not a de Polignac number, because 142223403 - 2¹ = 142223401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 142223403.

It is not an unprimeable number, because it can be changed into a prime (142223401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215488 + ... + 216146.

It is an arithmetic number, because the mean of its divisors is an integer number (6969600).

Almost surely, 2^142223403 is an apocalyptic number.

142223403 is a deficient number, since it is larger than the sum of its proper divisors (80803797).

142223403 is a wasteful number, since it uses less digits than its factorization.

142223403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 142223403 is about 11925.7453855095. The cubic root of 142223403 is about 521.9837967108.

Adding to 142223403 its reverse (304322241), we get a palindrome (446545644).

The spelling of 142223403 in words is "one hundred forty-two million, two hundred twenty-three thousand, four hundred three".