257494043 has 4 divisors (see below), whose sum is σ = 257665968. Its totient is φ = 257322120.

The previous prime is 257494037. The next prime is 257494057. The reversal of 257494043 is 340494752.

257494043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257494043 - 2¹⁴ = 257477659 is a prime.

It is a super-3 number, since 3×257494043³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257493988 and 257494006.

It is not an unprimeable number, because it can be changed into a prime (257494033) 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, 83696 + ... + 86717.

It is an arithmetic number, because the mean of its divisors is an integer number (64416492).

Almost surely, 2^257494043 is an apocalyptic number.

257494043 is a deficient number, since it is larger than the sum of its proper divisors (171925).

257494043 is a wasteful number, since it uses less digits than its factorization.

257494043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171924.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 257494043 is about 16046.6209215523. The cubic root of 257494043 is about 636.1932575616.

It can be divided in two parts, 25749 and 4043, that added together give a palindrome (29792).

The spelling of 257494043 in words is "two hundred fifty-seven million, four hundred ninety-four thousand, forty-three".