7421430 has 16 divisors (see below), whose sum is σ = 17811504. Its totient is φ = 1979040.

The previous prime is 7421383. The next prime is 7421437. The reversal of 7421430 is 341247.

It is a junction number, because it is equal to n+sod(n) for n = 7421397 and 7421406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421437) 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, 123661 + ... + 123720.

It is an arithmetic number, because the mean of its divisors is an integer number (1113219).

Almost surely, 2^7421430 is an apocalyptic number.

7421430 is an abundant number, since it is smaller than the sum of its proper divisors (10390074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7421430 is a wasteful number, since it uses less digits than its factorization.

7421430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247391.

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

The square root of 7421430 is about 2724.2301664874. The cubic root of 7421430 is about 195.0574452714.

Adding to 7421430 its reverse (341247), we get a palindrome (7762677).

The spelling of 7421430 in words is "seven million, four hundred twenty-one thousand, four hundred thirty".