9240421 has 2 divisors, whose sum is σ = 9240422. Its totient is φ = 9240420.

The previous prime is 9240409. The next prime is 9240431. The reversal of 9240421 is 1240429.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9235521 + 4900 = 3039^2 + 70^2 .

It is a cyclic number.

It is not a de Polignac number, because 9240421 - 2²³ = 851813 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 9240392 and 9240401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9240431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4620210 + 4620211.

It is an arithmetic number, because the mean of its divisors is an integer number (4620211).

Almost surely, 2^9240421 is an apocalyptic number.

It is an amenable number.

9240421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9240421 is an equidigital number, since it uses as much as digits as its factorization.

9240421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 9240421 is about 3039.8060793412. The cubic root of 9240421 is about 209.8443366454.

The spelling of 9240421 in words is "nine million, two hundred forty thousand, four hundred twenty-one".