257242246 has 8 divisors (see below), whose sum is σ = 392189184. Its totient is φ = 126512520.

The previous prime is 257242243. The next prime is 257242259. The reversal of 257242246 is 642242752.

257242246 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257242243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054150 + ... + 1054393.

It is an arithmetic number, because the mean of its divisors is an integer number (49023648).

Almost surely, 2^257242246 is an apocalyptic number.

257242246 is a deficient number, since it is larger than the sum of its proper divisors (134946938).

257242246 is a wasteful number, since it uses less digits than its factorization.

257242246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108606.

The product of its digits is 53760, while the sum is 34.

The square root of 257242246 is about 16038.7732074495. The cubic root of 257242246 is about 635.9858174257.

Adding to 257242246 its reverse (642242752), we get a palindrome (899484998).

The spelling of 257242246 in words is "two hundred fifty-seven million, two hundred forty-two thousand, two hundred forty-six".