7456421 has 8 divisors (see below), whose sum is σ = 9023040. Its totient is φ = 6015168.

The previous prime is 7456381. The next prime is 7456429. The reversal of 7456421 is 1246547.

7456421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7456421 - 2⁶ = 7456357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7456429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31211 + ... + 31448.

It is an arithmetic number, because the mean of its divisors is an integer number (1127880).

Almost surely, 2^7456421 is an apocalyptic number.

It is an amenable number.

7456421 is a deficient number, since it is larger than the sum of its proper divisors (1566619).

7456421 is a wasteful number, since it uses less digits than its factorization.

7456421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62683.

The product of its digits is 6720, while the sum is 29.

The square root of 7456421 is about 2730.6447956481. The cubic root of 7456421 is about 195.3635208916.

The spelling of 7456421 in words is "seven million, four hundred fifty-six thousand, four hundred twenty-one".