7421431 has 8 divisors (see below), whose sum is σ = 7807104. Its totient is φ = 7044960.

The previous prime is 7421383. The next prime is 7421437. The reversal of 7421431 is 1341247.

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 7421431 - 2¹¹ = 7419383 is a prime.

It is a super-2 number, since 2×7421431² = 110155276175522, which contains 22 as substring.

It is a Duffinian number.

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, 616 + ... + 3901.

It is an arithmetic number, because the mean of its divisors is an integer number (975888).

Almost surely, 2^7421431 is an apocalyptic number.

7421431 is a deficient number, since it is larger than the sum of its proper divisors (385673).

7421431 is a wasteful number, since it uses less digits than its factorization.

7421431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4601.

The product of its digits is 672, while the sum is 22.

The square root of 7421431 is about 2724.2303500255. The cubic root of 7421431 is about 195.0574540324.

Adding to 7421431 its reverse (1341247), we get a palindrome (8762678).

The spelling of 7421431 in words is "seven million, four hundred twenty-one thousand, four hundred thirty-one".