260421011 has 8 divisors (see below), whose sum is σ = 290252880. Its totient is φ = 232201728.

The previous prime is 260420989. The next prime is 260421013. The reversal of 260421011 is 110124062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 260421011 - 2¹⁸ = 260158867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260421013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402806 + ... + 403451.

It is an arithmetic number, because the mean of its divisors is an integer number (36281610).

Almost surely, 2^260421011 is an apocalyptic number.

260421011 is a deficient number, since it is larger than the sum of its proper divisors (29831869).

260421011 is a wasteful number, since it uses less digits than its factorization.

260421011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806293.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 260421011 is about 16137.5652128814. The cubic root of 260421011 is about 638.5947446854.

Adding to 260421011 its reverse (110124062), we get a palindrome (370545073).

The spelling of 260421011 in words is "two hundred sixty million, four hundred twenty-one thousand, eleven".