7421253 has 32 divisors (see below), whose sum is σ = 11821056. Its totient is φ = 4053888.

The previous prime is 7421251. The next prime is 7421257. The reversal of 7421253 is 3521247.

It is not a de Polignac number, because 7421253 - 2¹ = 7421251 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72000 + ... + 72102.

It is an arithmetic number, because the mean of its divisors is an integer number (369408).

Almost surely, 2^7421253 is an apocalyptic number.

7421253 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

7421253 is a deficient number, since it is larger than the sum of its proper divisors (4399803).

7421253 is a wasteful number, since it uses less digits than its factorization.

7421253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233.

The product of its digits is 1680, while the sum is 24.

The square root of 7421253 is about 2724.1976800519. The cubic root of 7421253 is about 195.0558945621.

The spelling of 7421253 in words is "seven million, four hundred twenty-one thousand, two hundred fifty-three".