142245653 has 4 divisors (see below), whose sum is σ = 155177088. Its totient is φ = 129314220.

The previous prime is 142245619. The next prime is 142245703. The reversal of 142245653 is 356542241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142245653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142295653) 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, 6465701 + ... + 6465722.

It is an arithmetic number, because the mean of its divisors is an integer number (38794272).

Almost surely, 2^142245653 is an apocalyptic number.

It is an amenable number.

142245653 is a deficient number, since it is larger than the sum of its proper divisors (12931435).

142245653 is a wasteful number, since it uses less digits than its factorization.

142245653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12931434.

The product of its digits is 28800, while the sum is 32.

The square root of 142245653 is about 11926.6782047643. The cubic root of 142245653 is about 522.0110157049.

Adding to 142245653 its reverse (356542241), we get a palindrome (498787894).

The spelling of 142245653 in words is "one hundred forty-two million, two hundred forty-five thousand, six hundred fifty-three".