42015413 has 4 divisors (see below), whose sum is σ = 45835008. Its totient is φ = 38195820.

The previous prime is 42015383. The next prime is 42015419. The reversal of 42015413 is 31451024.

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 42015413 - 2⁸ = 42015157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42015419) 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, 1909781 + ... + 1909802.

It is an arithmetic number, because the mean of its divisors is an integer number (11458752).

Almost surely, 2^42015413 is an apocalyptic number.

It is an amenable number.

42015413 is a deficient number, since it is larger than the sum of its proper divisors (3819595).

42015413 is a wasteful number, since it uses less digits than its factorization.

42015413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3819594.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 42015413 is about 6481.9297280980. The cubic root of 42015413 is about 347.6451799222.

Adding to 42015413 its reverse (31451024), we get a palindrome (73466437).

The spelling of 42015413 in words is "forty-two million, fifteen thousand, four hundred thirteen".