42002441 has 4 divisors (see below), whose sum is σ = 45233412. Its totient is φ = 38771472.

The previous prime is 42002431. The next prime is 42002449. The reversal of 42002441 is 14420024.

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 11587216 + 30415225 = 3404^2 + 5515^2 .

It is a cyclic number.

It is not a de Polignac number, because 42002441 - 2⁶ = 42002377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42002449) 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, 1615466 + ... + 1615491.

It is an arithmetic number, because the mean of its divisors is an integer number (11308353).

Almost surely, 2^42002441 is an apocalyptic number.

It is an amenable number.

42002441 is a deficient number, since it is larger than the sum of its proper divisors (3230971).

42002441 is a wasteful number, since it uses less digits than its factorization.

42002441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230970.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 42002441 is about 6480.9290229102. The cubic root of 42002441 is about 347.6093984701.

Adding to 42002441 its reverse (14420024), we get a palindrome (56422465).

The spelling of 42002441 in words is "forty-two million, two thousand, four hundred forty-one".