10134040421 has 2 divisors, whose sum is σ = 10134040422. Its totient is φ = 10134040420.

The previous prime is 10134040409. The next prime is 10134040439. The reversal of 10134040421 is 12404043101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5596536100 + 4537504321 = 74810^2 + 67361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10134040421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10134040393 and 10134040402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10134640421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5067020210 + 5067020211.

It is an arithmetic number, because the mean of its divisors is an integer number (5067020211).

Almost surely, 2^10134040421 is an apocalyptic number.

It is an amenable number.

10134040421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10134040421 is an equidigital number, since it uses as much as digits as its factorization.

10134040421 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 10134040421 its reverse (12404043101), we get a palindrome (22538083522).

It can be divided in two parts, 10 and 134040421, that added together give a palindrome (134040431).

The spelling of 10134040421 in words is "ten billion, one hundred thirty-four million, forty thousand, four hundred twenty-one".