142015111 has 16 divisors (see below), whose sum is σ = 166786048. Its totient is φ = 118389600.

The previous prime is 142015109. The next prime is 142015141. The reversal of 142015111 is 111510241.

It is not a de Polignac number, because 142015111 - 2¹ = 142015109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142015141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80701 + ... + 82441.

It is an arithmetic number, because the mean of its divisors is an integer number (10424128).

Almost surely, 2^142015111 is an apocalyptic number.

142015111 is a deficient number, since it is larger than the sum of its proper divisors (24770937).

142015111 is a wasteful number, since it uses less digits than its factorization.

142015111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 142015111 is about 11917.0093144211. The cubic root of 142015111 is about 521.7288499924.

Adding to 142015111 its reverse (111510241), we get a palindrome (253525352).

The spelling of 142015111 in words is "one hundred forty-two million, fifteen thousand, one hundred eleven".