10182421 has 2 divisors, whose sum is σ = 10182422. Its totient is φ = 10182420.

The previous prime is 10182377. The next prime is 10182427. The reversal of 10182421 is 12428101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9678321 + 504100 = 3111^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 10182421 - 2⁹ = 10181909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10182427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5091210 + 5091211.

It is an arithmetic number, because the mean of its divisors is an integer number (5091211).

Almost surely, 2^10182421 is an apocalyptic number.

It is an amenable number.

10182421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10182421 is an equidigital number, since it uses as much as digits as its factorization.

10182421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 10182421 is about 3190.9905985446. The cubic root of 10182421 is about 216.7456298643.

The spelling of 10182421 in words is "ten million, one hundred eighty-two thousand, four hundred twenty-one".