42747441 has 8 divisors (see below), whose sum is σ = 62178144. Its totient is φ = 25907520.

The previous prime is 42747437. The next prime is 42747449. The reversal of 42747441 is 14474724.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42747441 - 2² = 42747437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1295377 = 42747441 / (4 + 2 + 7 + 4 + 7 + 4 + 4 + 1).

It is not an unprimeable number, because it can be changed into a prime (42747449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647656 + ... + 647721.

It is an arithmetic number, because the mean of its divisors is an integer number (7772268).

Almost surely, 2^42747441 is an apocalyptic number.

It is an amenable number.

42747441 is a deficient number, since it is larger than the sum of its proper divisors (19430703).

42747441 is a wasteful number, since it uses less digits than its factorization.

42747441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295391.

The product of its digits is 25088, while the sum is 33.

The square root of 42747441 is about 6538.1527207614. The cubic root of 42747441 is about 349.6525558875.

The spelling of 42747441 in words is "forty-two million, seven hundred forty-seven thousand, four hundred forty-one".