142240015 has 8 divisors (see below), whose sum is σ = 170872848. Its totient is φ = 113668800.

The previous prime is 142240009. The next prime is 142240039. The reversal of 142240015 is 510042241.

142240015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 142240015 - 2¹⁹ = 141715727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142239974 and 142240001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10161 + ... + 19690.

It is an arithmetic number, because the mean of its divisors is an integer number (21359106).

Almost surely, 2^142240015 is an apocalyptic number.

142240015 is a deficient number, since it is larger than the sum of its proper divisors (28632833).

142240015 is an equidigital number, since it uses as much as digits as its factorization.

142240015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30809.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 142240015 is about 11926.4418415553. The cubic root of 142240015 is about 522.0041188638.

Adding to 142240015 its reverse (510042241), we get a palindrome (652282256).

The spelling of 142240015 in words is "one hundred forty-two million, two hundred forty thousand, fifteen".