10260400421 has 2 divisors, whose sum is σ = 10260400422. Its totient is φ = 10260400420.

The previous prime is 10260400417. The next prime is 10260400427. The reversal of 10260400421 is 12400406201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9637348900 + 623051521 = 98170^2 + 24961^2 .

It is a cyclic number.

It is not a de Polignac number, because 10260400421 - 2² = 10260400417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10260400393 and 10260400402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10260400427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5130200210 + 5130200211.

It is an arithmetic number, because the mean of its divisors is an integer number (5130200211).

Almost surely, 2^10260400421 is an apocalyptic number.

It is an amenable number.

10260400421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10260400421 is an equidigital number, since it uses as much as digits as its factorization.

10260400421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 10260400421 its reverse (12400406201), we get a palindrome (22660806622).

The spelling of 10260400421 in words is "ten billion, two hundred sixty million, four hundred thousand, four hundred twenty-one".