263453042 has 4 divisors (see below), whose sum is σ = 395179566. Its totient is φ = 131726520.

The previous prime is 263453041. The next prime is 263453051. The reversal of 263453042 is 240354362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240354362 = 2 ⋅120177181.

It can be written as a sum of positive squares in only one way, i.e., 230402041 + 33051001 = 15179^2 + 5749^2 .

It is a junction number, because it is equal to n+sod(n) for n = 263452996 and 263453014.

It is not an unprimeable number, because it can be changed into a prime (263453041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65863259 + ... + 65863262.

Almost surely, 2^263453042 is an apocalyptic number.

263453042 is a deficient number, since it is larger than the sum of its proper divisors (131726524).

263453042 is a wasteful number, since it uses less digits than its factorization.

263453042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131726523.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 263453042 is about 16231.2366133946. The cubic root of 263453042 is about 641.0635327810.

The spelling of 263453042 in words is "two hundred sixty-three million, four hundred fifty-three thousand, forty-two".