142015705 has 16 divisors (see below), whose sum is σ = 194325264. Its totient is φ = 98703360.

The previous prime is 142015667. The next prime is 142015723. The reversal of 142015705 is 507510241.

It can be written as a sum of positive squares in 8 ways, for example, as 952576 + 141063129 = 976^2 + 11877^2 .

It is not a de Polignac number, because 142015705 - 2⁹ = 142015193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142015705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63156 + ... + 65365.

It is an arithmetic number, because the mean of its divisors is an integer number (12145329).

Almost surely, 2^142015705 is an apocalyptic number.

It is an amenable number.

142015705 is a deficient number, since it is larger than the sum of its proper divisors (52309559).

142015705 is a wasteful number, since it uses less digits than its factorization.

142015705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128556.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 142015705 is about 11917.0342367554. The cubic root of 142015705 is about 521.7295773950.

Adding to 142015705 its reverse (507510241), we get a palindrome (649525946).

The spelling of 142015705 in words is "one hundred forty-two million, fifteen thousand, seven hundred five".