42015601 has 4 divisors (see below), whose sum is σ = 42992752. Its totient is φ = 41038452.

The previous prime is 42015581. The next prime is 42015613. The reversal of 42015601 is 10651024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42015601 - 2¹¹ = 42013553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42015671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488511 + ... + 488596.

It is an arithmetic number, because the mean of its divisors is an integer number (10748188).

Almost surely, 2^42015601 is an apocalyptic number.

It is an amenable number.

42015601 is a deficient number, since it is larger than the sum of its proper divisors (977151).

42015601 is an equidigital number, since it uses as much as digits as its factorization.

42015601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977150.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 42015601 is about 6481.9442299360. The cubic root of 42015601 is about 347.6456984398.

Adding to 42015601 its reverse (10651024), we get a palindrome (52666625).

The spelling of 42015601 in words is "forty-two million, fifteen thousand, six hundred one".