142940015 has 8 divisors (see below), whose sum is σ = 171627648. Its totient is φ = 114285600.

The previous prime is 142939987. The next prime is 142940023. The reversal of 142940015 is 510049241.

142940015 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 a de Polignac number, because none of the positive numbers 2^k-142940015 is a prime.

It is a Duffinian number.

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, 2429 + ... + 17081.

It is an arithmetic number, because the mean of its divisors is an integer number (21453456).

Almost surely, 2^142940015 is an apocalyptic number.

142940015 is a deficient number, since it is larger than the sum of its proper divisors (28687633).

142940015 is a wasteful number, since it uses less digits than its factorization.

142940015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16609.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 142940015 is about 11955.7523811762. The cubic root of 142940015 is about 522.8590238696.

Adding to 142940015 its reverse (510049241), we get a palindrome (652989256).

The spelling of 142940015 in words is "one hundred forty-two million, nine hundred forty thousand, fifteen".