7242391 has 8 divisors (see below), whose sum is σ = 8258544. Its totient is φ = 6291840.

The previous prime is 7242383. The next prime is 7242409. The reversal of 7242391 is 1932427.

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 7242391 - 2³ = 7242383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7242341) 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, 16165 + ... + 16606.

It is an arithmetic number, because the mean of its divisors is an integer number (1032318).

Almost surely, 2^7242391 is an apocalyptic number.

7242391 is a deficient number, since it is larger than the sum of its proper divisors (1016153).

7242391 is a wasteful number, since it uses less digits than its factorization.

7242391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32801.

The product of its digits is 3024, while the sum is 28.

The square root of 7242391 is about 2691.1690768140. The cubic root of 7242391 is about 193.4760991340.

The spelling of 7242391 in words is "seven million, two hundred forty-two thousand, three hundred ninety-one".