7390243 has 8 divisors (see below), whose sum is σ = 8475488. Its totient is φ = 6312384.

The previous prime is 7390231. The next prime is 7390261. The reversal of 7390243 is 3420937.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7390243 is a prime.

It is an Ulam number.

It is the 2719-th Hogben number.

It is not an unprimeable number, because it can be changed into a prime (7390283) by changing a digit.

It is a nontrivial repunit in base 2718.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505 + ... + 3877.

It is an arithmetic number, because the mean of its divisors is an integer number (1059436).

Almost surely, 2^7390243 is an apocalyptic number.

7390243 is a deficient number, since it is larger than the sum of its proper divisors (1085245).

7390243 is a wasteful number, since it uses less digits than its factorization.

7390243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 7390243 is about 2718.5001379437. The cubic root of 7390243 is about 194.7838323380.

The spelling of 7390243 in words is "seven million, three hundred ninety thousand, two hundred forty-three".