9040110421 has 2 divisors, whose sum is σ = 9040110422. Its totient is φ = 9040110420.

The previous prime is 9040110389. The next prime is 9040110427. The reversal of 9040110421 is 1240110409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7958424100 + 1081686321 = 89210^2 + 32889^2 .

It is an emirp because it is prime and its reverse (1240110409) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9040110421 - 2⁵ = 9040110389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9040110392 and 9040110401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9040110427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4520055210 + 4520055211.

It is an arithmetic number, because the mean of its divisors is an integer number (4520055211).

Almost surely, 2^9040110421 is an apocalyptic number.

It is an amenable number.

9040110421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9040110421 is an equidigital number, since it uses as much as digits as its factorization.

9040110421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 9040110421 is about 95079.4952710625. The cubic root of 9040110421 is about 2083.1693563156.

The spelling of 9040110421 in words is "nine billion, forty million, one hundred ten thousand, four hundred twenty-one".