7240081 has 4 divisors (see below), whose sum is σ = 7473664. Its totient is φ = 7006500.

The previous prime is 7240073. The next prime is 7240091. The reversal of 7240081 is 1800427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1800427 = 167 ⋅10781.

It is a cyclic number.

It is not a de Polignac number, because 7240081 - 2³ = 7240073 is a prime.

It is a super-2 number, since 2×7240081² = 104837545773122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7240001) 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 3 ways as a sum of consecutive naturals, for example, 116745 + ... + 116806.

It is an arithmetic number, because the mean of its divisors is an integer number (1868416).

Almost surely, 2^7240081 is an apocalyptic number.

It is an amenable number.

7240081 is a deficient number, since it is larger than the sum of its proper divisors (233583).

7240081 is a wasteful number, since it uses less digits than its factorization.

7240081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233582.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 7240081 is about 2690.7398610791. The cubic root of 7240081 is about 193.4555268619.

The spelling of 7240081 in words is "seven million, two hundred forty thousand, eighty-one".