42401515 has 8 divisors (see below), whose sum is σ = 54795888. Its totient is φ = 31311840.

The previous prime is 42401501. The next prime is 42401531. The reversal of 42401515 is 51510424.

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

It is a de Polignac number, because none of the positive numbers 2^k-42401515 is a prime.

It is a super-3 number, since 3×42401515³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 326101 + ... + 326230.

It is an arithmetic number, because the mean of its divisors is an integer number (6849486).

Almost surely, 2^42401515 is an apocalyptic number.

42401515 is a deficient number, since it is larger than the sum of its proper divisors (12394373).

42401515 is a wasteful number, since it uses less digits than its factorization.

42401515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652349.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 42401515 is about 6511.6445695385. The cubic root of 42401515 is about 348.7068333841.

Adding to 42401515 its reverse (51510424), we get a palindrome (93911939).

The spelling of 42401515 in words is "forty-two million, four hundred one thousand, five hundred fifteen".