7340421 has 8 divisors (see below), whose sum is σ = 10677024. Its totient is φ = 4448720.

The previous prime is 7340419. The next prime is 7340483. The reversal of 7340421 is 1240437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7340421 - 2¹ = 7340419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7340621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111186 + ... + 111251.

It is an arithmetic number, because the mean of its divisors is an integer number (1334628).

Almost surely, 2^7340421 is an apocalyptic number.

It is an amenable number.

7340421 is a deficient number, since it is larger than the sum of its proper divisors (3336603).

7340421 is a wasteful number, since it uses less digits than its factorization.

7340421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222451.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 7340421 is about 2709.3211326825. The cubic root of 7340421 is about 194.3451273178.

Adding to 7340421 its reverse (1240437), we get a palindrome (8580858).

The spelling of 7340421 in words is "seven million, three hundred forty thousand, four hundred twenty-one".