42547250 has 16 divisors (see below), whose sum is σ = 79648920. Its totient is φ = 17018800.

The previous prime is 42547249. The next prime is 42547259. The reversal of 42547250 is 5274524.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7890481 + 34656769 = 2809^2 + 5887^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42547259) 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, 84845 + ... + 85344.

Almost surely, 2^42547250 is an apocalyptic number.

42547250 is a deficient number, since it is larger than the sum of its proper divisors (37101670).

42547250 is a wasteful number, since it uses less digits than its factorization.

42547250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170206 (or 170196 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 42547250 is about 6522.8253081008. The cubic root of 42547250 is about 349.1058810713.

The spelling of 42547250 in words is "forty-two million, five hundred forty-seven thousand, two hundred fifty".