7292421 has 6 divisors (see below), whose sum is σ = 10533510. Its totient is φ = 4861608.

The previous prime is 7292407. The next prime is 7292431. The reversal of 7292421 is 1242927.

It can be written as a sum of positive squares in only one way, i.e., 3663396 + 3629025 = 1914^2 + 1905^2 .

It is not a de Polignac number, because 7292421 - 2¹¹ = 7290373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7292401) 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 5 ways as a sum of consecutive naturals, for example, 405126 + ... + 405143.

It is an arithmetic number, because the mean of its divisors is an integer number (1755585).

Almost surely, 2^7292421 is an apocalyptic number.

It is an amenable number.

7292421 is a deficient number, since it is larger than the sum of its proper divisors (3241089).

7292421 is a wasteful number, since it uses less digits than its factorization.

7292421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810275 (or 810272 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 7292421 is about 2700.4482961168. The cubic root of 7292421 is about 193.9205842802.

The spelling of 7292421 in words is "seven million, two hundred ninety-two thousand, four hundred twenty-one".