42887413 has 4 divisors (see below), whose sum is σ = 45410220. Its totient is φ = 40364608.

The previous prime is 42887401. The next prime is 42887431. The reversal of 42887413 is 31478824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38464804 + 4422609 = 6202^2 + 2103^2 .

It is a cyclic number.

It is not a de Polignac number, because 42887413 - 2¹⁷ = 42756341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42887443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1261378 + ... + 1261411.

It is an arithmetic number, because the mean of its divisors is an integer number (11352555).

Almost surely, 2^42887413 is an apocalyptic number.

It is an amenable number.

42887413 is a deficient number, since it is larger than the sum of its proper divisors (2522807).

42887413 is a wasteful number, since it uses less digits than its factorization.

42887413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522806.

The product of its digits is 43008, while the sum is 37.

The square root of 42887413 is about 6548.8482193436. The cubic root of 42887413 is about 350.0337736116.

The spelling of 42887413 in words is "forty-two million, eight hundred eighty-seven thousand, four hundred thirteen".