142300645 has 4 divisors (see below), whose sum is σ = 170760780. Its totient is φ = 113840512.

The previous prime is 142300603. The next prime is 142300657. The reversal of 142300645 is 546003241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546003241 = 7 ⋅78000463.

It can be written as a sum of positive squares in 2 ways, for example, as 16008001 + 126292644 = 4001^2 + 11238^2 .

It is a cyclic number.

It is not a de Polignac number, because 142300645 - 2⁹ = 142300133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14230060 + ... + 14230069.

It is an arithmetic number, because the mean of its divisors is an integer number (42690195).

Almost surely, 2^142300645 is an apocalyptic number.

It is an amenable number.

142300645 is a deficient number, since it is larger than the sum of its proper divisors (28460135).

142300645 is an equidigital number, since it uses as much as digits as its factorization.

142300645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28460134.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 142300645 is about 11928.9834017824. The cubic root of 142300645 is about 522.0782766502.

Adding to 142300645 its reverse (546003241), we get a palindrome (688303886).

The spelling of 142300645 in words is "one hundred forty-two million, three hundred thousand, six hundred forty-five".