42215529 has 8 divisors (see below), whose sum is σ = 56337120. Its totient is φ = 28118816.

The previous prime is 42215513. The next prime is 42215531. The reversal of 42215529 is 92551224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42215529 - 2⁴ = 42215513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42215496 and 42215505.

It is not an unprimeable number, because it can be changed into a prime (42215629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1812 + ... + 9365.

It is an arithmetic number, because the mean of its divisors is an integer number (7042140).

Almost surely, 2^42215529 is an apocalyptic number.

It is an amenable number.

42215529 is a deficient number, since it is larger than the sum of its proper divisors (14121591).

42215529 is a wasteful number, since it uses less digits than its factorization.

42215529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12439.

The product of its digits is 7200, while the sum is 30.

The square root of 42215529 is about 6497.3478435435. The cubic root of 42215529 is about 348.1962412124.

It can be divided in two parts, 422 and 15529, that added together give a palindrome (15951).

The spelling of 42215529 in words is "forty-two million, two hundred fifteen thousand, five hundred twenty-nine".