260402021 has 16 divisors (see below), whose sum is σ = 297019008. Its totient is φ = 225984000.

The previous prime is 260402017. The next prime is 260402027. The reversal of 260402021 is 120204062.

It is not a de Polignac number, because 260402021 - 2² = 260402017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260402027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216221 + ... + 217421.

It is an arithmetic number, because the mean of its divisors is an integer number (18563688).

Almost surely, 2^260402021 is an apocalyptic number.

It is an amenable number.

260402021 is a deficient number, since it is larger than the sum of its proper divisors (36616987).

260402021 is a wasteful number, since it uses less digits than its factorization.

260402021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 260402021 is about 16136.9768234326. The cubic root of 260402021 is about 638.5792221169.

Adding to 260402021 its reverse (120204062), we get a palindrome (380606083).

The spelling of 260402021 in words is "two hundred sixty million, four hundred two thousand, twenty-one".