42647441 has 12 divisors (see below), whose sum is σ = 45618972. Its totient is φ = 39859968.

The previous prime is 42647417. The next prime is 42647447. The reversal of 42647441 is 14474624.

It can be written as a sum of positive squares in 6 ways, for example, as 2907025 + 39740416 = 1705^2 + 6304^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42647441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42647398 and 42647407.

It is not an unprimeable number, because it can be changed into a prime (42647447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49571 + ... + 50423.

It is an arithmetic number, because the mean of its divisors is an integer number (3801581).

Almost surely, 2^42647441 is an apocalyptic number.

It is an amenable number.

42647441 is a deficient number, since it is larger than the sum of its proper divisors (2971531).

42647441 is a wasteful number, since it uses less digits than its factorization.

42647441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1043 counting only the distinct ones).

The product of its digits is 21504, while the sum is 32.

The square root of 42647441 is about 6530.5008230610. The cubic root of 42647441 is about 349.3796931130.

The spelling of 42647441 in words is "forty-two million, six hundred forty-seven thousand, four hundred forty-one".