42748241 has 4 divisors (see below), whose sum is σ = 42789300. Its totient is φ = 42707184.

The previous prime is 42748231. The next prime is 42748253. The reversal of 42748241 is 14284724.

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 12816400 + 29931841 = 3580^2 + 5471^2 .

It is a cyclic number.

It is not a de Polignac number, because 42748241 - 2²² = 38553937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42748198 and 42748207.

It is not an unprimeable number, because it can be changed into a prime (42748201) 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, 18926 + ... + 21063.

It is an arithmetic number, because the mean of its divisors is an integer number (10697325).

Almost surely, 2^42748241 is an apocalyptic number.

It is an amenable number.

42748241 is a deficient number, since it is larger than the sum of its proper divisors (41059).

42748241 is a wasteful number, since it uses less digits than its factorization.

42748241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41058.

The product of its digits is 14336, while the sum is 32.

The square root of 42748241 is about 6538.2138998353. The cubic root of 42748241 is about 349.6547370730.

The spelling of 42748241 in words is "forty-two million, seven hundred forty-eight thousand, two hundred forty-one".