7242287 has 16 divisors (see below), whose sum is σ = 8316000. Its totient is φ = 6251904.

The previous prime is 7242271. The next prime is 7242307. The reversal of 7242287 is 7822427.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7242287 - 2⁴ = 7242271 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 (7242247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26789 + ... + 27057.

It is an arithmetic number, because the mean of its divisors is an integer number (519750).

Almost surely, 2^7242287 is an apocalyptic number.

7242287 is a deficient number, since it is larger than the sum of its proper divisors (1073713).

7242287 is a wasteful number, since it uses less digits than its factorization.

7242287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410.

The product of its digits is 12544, while the sum is 32.

The square root of 7242287 is about 2691.1497542872. The cubic root of 7242287 is about 193.4751730305.

The spelling of 7242287 in words is "seven million, two hundred forty-two thousand, two hundred eighty-seven".