42401523 has 8 divisors (see below), whose sum is σ = 56574208. Its totient is φ = 28248264.

The previous prime is 42401501. The next prime is 42401531. The reversal of 42401523 is 32510424.

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

It is not a de Polignac number, because 42401523 - 2⁸ = 42401267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42401523.

It is not an unprimeable number, because it can be changed into a prime (42401563) 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, 1386 + ... + 9312.

It is an arithmetic number, because the mean of its divisors is an integer number (7071776).

Almost surely, 2^42401523 is an apocalyptic number.

42401523 is a deficient number, since it is larger than the sum of its proper divisors (14172685).

42401523 is a wasteful number, since it uses less digits than its factorization.

42401523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9713.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42401523 is about 6511.6451838226. The cubic root of 42401523 is about 348.7068553145.

Adding to 42401523 its reverse (32510424), we get a palindrome (74911947).

It can be divided in two parts, 42401 and 523, that added together give a palindrome (42924).

The spelling of 42401523 in words is "forty-two million, four hundred one thousand, five hundred twenty-three".