42387241 has 12 divisors (see below), whose sum is σ = 47288332. Its totient is φ = 37767744.

The previous prime is 42387217. The next prime is 42387287. The reversal of 42387241 is 14278324.

It can be written as a sum of positive squares in 6 ways, for example, as 3686400 + 38700841 = 1920^2 + 6221^2 .

It is not a de Polignac number, because 42387241 - 2²³ = 33998633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42387211) 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, 8995 + ... + 12871.

Almost surely, 2^42387241 is an apocalyptic number.

It is an amenable number.

42387241 is a deficient number, since it is larger than the sum of its proper divisors (4901091).

42387241 is a wasteful number, since it uses less digits than its factorization.

42387241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948 (or 3919 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 42387241 is about 6510.5484407997. The cubic root of 42387241 is about 348.6676995624.

The spelling of 42387241 in words is "forty-two million, three hundred eighty-seven thousand, two hundred forty-one".