42510249 has 6 divisors (see below), whose sum is σ = 61403706. Its totient is φ = 28340160.

The previous prime is 42510241. The next prime is 42510253. The reversal of 42510249 is 94201524.

It can be written as a sum of positive squares in only one way, i.e., 34892649 + 7617600 = 5907^2 + 2760^2 .

It is not a de Polignac number, because 42510249 - 2³ = 42510241 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42510241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2361672 + ... + 2361689.

It is an arithmetic number, because the mean of its divisors is an integer number (10233951).

Almost surely, 2^42510249 is an apocalyptic number.

It is an amenable number.

42510249 is a deficient number, since it is larger than the sum of its proper divisors (18893457).

42510249 is a wasteful number, since it uses less digits than its factorization.

42510249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723367 (or 4723364 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 42510249 is about 6519.9884202351. The cubic root of 42510249 is about 349.0046523355.

The spelling of 42510249 in words is "forty-two million, five hundred ten thousand, two hundred forty-nine".