42215075 has 12 divisors (see below), whose sum is σ = 59825040. Its totient is φ = 28947360.

The previous prime is 42215057. The next prime is 42215081. The reversal of 42215075 is 57051224.

It is not a de Polignac number, because 42215075 - 2⁸ = 42214819 is a prime.

It is a super-2 number, since 2×42215075² = 3564225114511250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120440 + ... + 120789.

It is an arithmetic number, because the mean of its divisors is an integer number (4985420).

Almost surely, 2^42215075 is an apocalyptic number.

42215075 is a deficient number, since it is larger than the sum of its proper divisors (17609965).

42215075 is a wasteful number, since it uses less digits than its factorization.

42215075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241246 (or 241241 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 42215075 is about 6497.3129061174. The cubic root of 42215075 is about 348.1949930014.

Adding to 42215075 its reverse (57051224), we get a palindrome (99266299).

The spelling of 42215075 in words is "forty-two million, two hundred fifteen thousand, seventy-five".