142440513 has 8 divisors (see below), whose sum is σ = 189981888. Its totient is φ = 94929744.

The previous prime is 142440509. The next prime is 142440517. The reversal of 142440513 is 315044241.

It is an interprime number because it is at equal distance from previous prime (142440509) and next prime (142440517).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142440513 - 2² = 142440509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142440517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7495 + ... + 18467.

It is an arithmetic number, because the mean of its divisors is an integer number (23747736).

Almost surely, 2^142440513 is an apocalyptic number.

It is an amenable number.

142440513 is a deficient number, since it is larger than the sum of its proper divisors (47541375).

142440513 is a wasteful number, since it uses less digits than its factorization.

142440513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15303.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 142440513 is about 11934.8444899798. The cubic root of 142440513 is about 522.2492717357.

Adding to 142440513 its reverse (315044241), we get a palindrome (457484754).

The spelling of 142440513 in words is "one hundred forty-two million, four hundred forty thousand, five hundred thirteen".