248724442 has 16 divisors (see below), whose sum is σ = 380625480. Its totient is φ = 121855552.

The previous prime is 248724401. The next prime is 248724449. The reversal of 248724442 is 244427842.

It is a Cunningham number, because it is equal to 15771²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 245831041 + 2893401 = 15679^2 + 1701^2 .

It is a super-2 number, since 2×248724442² = 123727696096422728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (248724449) 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, 144684 + ... + 146392.

Almost surely, 2^248724442 is an apocalyptic number.

248724442 is a deficient number, since it is larger than the sum of its proper divisors (131901038).

248724442 is a wasteful number, since it uses less digits than its factorization.

248724442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3137.

The product of its digits is 114688, while the sum is 37.

The square root of 248724442 is about 15771.0000317038. Note that the first 4 decimals coincide. The cubic root of 248724442 is about 628.8872960018.

The spelling of 248724442 in words is "two hundred forty-eight million, seven hundred twenty-four thousand, four hundred forty-two".