142788015 has 96 divisors (see below), whose sum is σ = 281788416. Its totient is φ = 69050880.

The previous prime is 142788013. The next prime is 142788047. The reversal of 142788015 is 510887241.

It is not a de Polignac number, because 142788015 - 2¹ = 142788013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142788011) 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 95 ways as a sum of consecutive naturals, for example, 640194 + ... + 640416.

It is an arithmetic number, because the mean of its divisors is an integer number (2935296).

Almost surely, 2^142788015 is an apocalyptic number.

142788015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142788015 is a deficient number, since it is larger than the sum of its proper divisors (139000401).

142788015 is a wasteful number, since it uses less digits than its factorization.

142788015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 142788015 is about 11949.3939176847. The cubic root of 142788015 is about 522.6736249829.

The spelling of 142788015 in words is "one hundred forty-two million, seven hundred eighty-eight thousand, fifteen".