142203245 has 4 divisors (see below), whose sum is σ = 170643900. Its totient is φ = 113762592.

The previous prime is 142203241. The next prime is 142203263. The reversal of 142203245 is 542302241.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46280809 + 95922436 = 6803^2 + 9794^2 .

It is a cyclic number.

It is not a de Polignac number, because 142203245 - 2² = 142203241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142203245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142203241) 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, 14220320 + ... + 14220329.

It is an arithmetic number, because the mean of its divisors is an integer number (42660975).

Almost surely, 2^142203245 is an apocalyptic number.

It is an amenable number.

142203245 is a deficient number, since it is larger than the sum of its proper divisors (28440655).

142203245 is an equidigital number, since it uses as much as digits as its factorization.

142203245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28440654.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 142203245 is about 11924.9002092261. The cubic root of 142203245 is about 521.9591344628.

Adding to 142203245 its reverse (542302241), we get a palindrome (684505486).

The spelling of 142203245 in words is "one hundred forty-two million, two hundred three thousand, two hundred forty-five".