142544245 has 4 divisors (see below), whose sum is σ = 171053100. Its totient is φ = 114035392.

The previous prime is 142544243. The next prime is 142544257. The reversal of 142544245 is 542445241.

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 43322724 + 99221521 = 6582^2 + 9961^2 .

It is a cyclic number.

It is not a de Polignac number, because 142544245 - 2¹ = 142544243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142544243) 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, 14254420 + ... + 14254429.

It is an arithmetic number, because the mean of its divisors is an integer number (42763275).

Almost surely, 2^142544245 is an apocalyptic number.

It is an amenable number.

142544245 is a deficient number, since it is larger than the sum of its proper divisors (28508855).

142544245 is an equidigital number, since it uses as much as digits as its factorization.

142544245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28508854.

The product of its digits is 25600, while the sum is 31.

The square root of 142544245 is about 11939.1894616008. The cubic root of 142544245 is about 522.3760166132.

Adding to 142544245 its reverse (542445241), we get a palindrome (684989486).

The spelling of 142544245 in words is "one hundred forty-two million, five hundred forty-four thousand, two hundred forty-five".