223042457 has 4 divisors (see below), whose sum is σ = 243319056. Its totient is φ = 202765860.

The previous prime is 223042447. The next prime is 223042471. The reversal of 223042457 is 754240322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 223042457 - 2¹⁴ = 223026073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223042447) 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, 10138283 + ... + 10138304.

It is an arithmetic number, because the mean of its divisors is an integer number (60829764).

Almost surely, 2^223042457 is an apocalyptic number.

It is an amenable number.

223042457 is a deficient number, since it is larger than the sum of its proper divisors (20276599).

223042457 is a wasteful number, since it uses less digits than its factorization.

223042457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20276598.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 223042457 is about 14934.6060209167. The cubic root of 223042457 is about 606.4511820070.

Adding to 223042457 its reverse (754240322), we get a palindrome (977282779).

The spelling of 223042457 in words is "two hundred twenty-three million, forty-two thousand, four hundred fifty-seven".