257242203 has 16 divisors (see below), whose sum is σ = 381642240. Its totient is φ = 171250632.

The previous prime is 257242201. The next prime is 257242217. The reversal of 257242203 is 302242752.

It is not a de Polignac number, because 257242203 - 2¹ = 257242201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (257242201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13650 + ... + 26472.

It is an arithmetic number, because the mean of its divisors is an integer number (23852640).

Almost surely, 2^257242203 is an apocalyptic number.

257242203 is a deficient number, since it is larger than the sum of its proper divisors (124400037).

257242203 is a wasteful number, since it uses less digits than its factorization.

257242203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13575 (or 13569 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 257242203 is about 16038.7718669479. The cubic root of 257242203 is about 635.9857819890.

Adding to 257242203 its reverse (302242752), we get a palindrome (559484955).

The spelling of 257242203 in words is "two hundred fifty-seven million, two hundred forty-two thousand, two hundred three".