42142215 has 16 divisors (see below), whose sum is σ = 67528800. Its totient is φ = 22442112.

The previous prime is 42142213. The next prime is 42142229. The reversal of 42142215 is 51224124.

It is not a de Polignac number, because 42142215 - 2¹ = 42142213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42142191 and 42142200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42142211) 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, 10741 + ... + 14129.

It is an arithmetic number, because the mean of its divisors is an integer number (4220550).

Almost surely, 2^42142215 is an apocalyptic number.

42142215 is a deficient number, since it is larger than the sum of its proper divisors (25386585).

42142215 is a wasteful number, since it uses less digits than its factorization.

42142215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4226.

The product of its digits is 640, while the sum is 21.

The square root of 42142215 is about 6491.7035514570. The cubic root of 42142215 is about 347.9945583110.

Adding to 42142215 its reverse (51224124), we get a palindrome (93366339).

The spelling of 42142215 in words is "forty-two million, one hundred forty-two thousand, two hundred fifteen".