7148421 has 12 divisors (see below), whose sum is σ = 11800672. Its totient is φ = 4084776.

The previous prime is 7148419. The next prime is 7148429. The reversal of 7148421 is 1248417.

It is not a de Polignac number, because 7148421 - 2¹ = 7148419 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7148429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56671 + ... + 56796.

Almost surely, 2^7148421 is an apocalyptic number.

It is an amenable number.

7148421 is a deficient number, since it is larger than the sum of its proper divisors (4652251).

7148421 is a wasteful number, since it uses less digits than its factorization.

7148421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113480 (or 113477 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 7148421 is about 2673.6531188619. The cubic root of 7148421 is about 192.6356698071.

It can be divided in two parts, 7148 and 421, that added together give a square (7569 = 87²).

The spelling of 7148421 in words is "seven million, one hundred forty-eight thousand, four hundred twenty-one".