260434921 has 4 divisors (see below), whose sum is σ = 260467200. Its totient is φ = 260402644.

The previous prime is 260434913. The next prime is 260434949. The reversal of 260434921 is 129434062.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 260434921 - 2³ = 260434913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260434981) 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, 7800 + ... + 24118.

It is an arithmetic number, because the mean of its divisors is an integer number (65116800).

Almost surely, 2^260434921 is an apocalyptic number.

It is an amenable number.

260434921 is a deficient number, since it is larger than the sum of its proper divisors (32279).

260434921 is a wasteful number, since it uses less digits than its factorization.

260434921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32278.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 260434921 is about 16137.9961891184. The cubic root of 260434921 is about 638.6061143450.

Adding to 260434921 its reverse (129434062), we get a palindrome (389868983).

The spelling of 260434921 in words is "two hundred sixty million, four hundred thirty-four thousand, nine hundred twenty-one".