42166002523 has 8 divisors (see below), whose sum is σ = 44335086480. Its totient is φ = 40044590880.

The previous prime is 42166002497. The next prime is 42166002533. The reversal of 42166002523 is 32520066124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42166002523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42166002533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11916265 + ... + 11919802.

It is an arithmetic number, because the mean of its divisors is an integer number (5541885810).

Almost surely, 2^42166002523 is an apocalyptic number.

42166002523 is a deficient number, since it is larger than the sum of its proper divisors (2169083957).

42166002523 is a wasteful number, since it uses less digits than its factorization.

42166002523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23836157.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 42166002523 its reverse (32520066124), we get a palindrome (74686068647).

The spelling of 42166002523 in words is "forty-two billion, one hundred sixty-six million, two thousand, five hundred twenty-three".