42142115 has 4 divisors (see below), whose sum is σ = 50570544. Its totient is φ = 33713688.

The previous prime is 42142091. The next prime is 42142151. The reversal of 42142115 is 51124124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42142115 - 2¹⁰ = 42141091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4214207 + ... + 4214216.

It is an arithmetic number, because the mean of its divisors is an integer number (12642636).

Almost surely, 2^42142115 is an apocalyptic number.

42142115 is a deficient number, since it is larger than the sum of its proper divisors (8428429).

42142115 is an equidigital number, since it uses as much as digits as its factorization.

42142115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8428428.

The product of its digits is 320, while the sum is 20.

The square root of 42142115 is about 6491.6958493140. The cubic root of 42142115 is about 347.9942830567.

Adding to 42142115 its reverse (51124124), we get a palindrome (93266239).

Subtracting 42142115 from its reverse (51124124), we obtain a square (8982009 = 2997²).

The spelling of 42142115 in words is "forty-two million, one hundred forty-two thousand, one hundred fifteen".