42304249 has 12 divisors (see below), whose sum is σ = 46081596. Its totient is φ = 38817792.

The previous prime is 42304237. The next prime is 42304253. The reversal of 42304249 is 94240324.

It can be written as a sum of positive squares in 6 ways, for example, as 1087849 + 41216400 = 1043^2 + 6420^2 .

It is not a de Polignac number, because 42304249 - 2²⁵ = 8749817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42304259) 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, 31969 + ... + 33265.

It is an arithmetic number, because the mean of its divisors is an integer number (3840133).

Almost surely, 2^42304249 is an apocalyptic number.

It is an amenable number.

42304249 is a deficient number, since it is larger than the sum of its proper divisors (3777347).

42304249 is a wasteful number, since it uses less digits than its factorization.

42304249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516 (or 1503 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 42304249 is about 6504.1716613263. The cubic root of 42304249 is about 348.4399931813.

The spelling of 42304249 in words is "forty-two million, three hundred four thousand, two hundred forty-nine".