7421031 has 8 divisors (see below), whose sum is σ = 10994160. Its totient is φ = 4947336.

The previous prime is 7421021. The next prime is 7421033. The reversal of 7421031 is 1301247.

It is not a de Polignac number, because 7421031 - 2⁹ = 7420519 is a prime.

It is a super-2 number, since 2×7421031² = 110143402205922, which contains 22 as substring.

It is an Ulam number.

7421031 is a lucky number.

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 7420995 and 7421013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137400 + ... + 137453.

It is an arithmetic number, because the mean of its divisors is an integer number (1374270).

Almost surely, 2^7421031 is an apocalyptic number.

7421031 is a deficient number, since it is larger than the sum of its proper divisors (3573129).

7421031 is a wasteful number, since it uses less digits than its factorization.

7421031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274862 (or 274856 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 7421031 is about 2724.1569338054. The cubic root of 7421031 is about 195.0539495697.

Adding to 7421031 its reverse (1301247), we get a palindrome (8722278).

The spelling of 7421031 in words is "seven million, four hundred twenty-one thousand, thirty-one".