7242778 has 8 divisors (see below), whose sum is σ = 11214720. Its totient is φ = 3504540.

The previous prime is 7242751. The next prime is 7242793. The reversal of 7242778 is 8772427.

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

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58348 + ... + 58471.

It is an arithmetic number, because the mean of its divisors is an integer number (1401840).

Almost surely, 2^7242778 is an apocalyptic number.

7242778 is a deficient number, since it is larger than the sum of its proper divisors (3971942).

7242778 is a wasteful number, since it uses less digits than its factorization.

7242778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116852.

The product of its digits is 43904, while the sum is 37.

The square root of 7242778 is about 2691.2409776904. The cubic root of 7242778 is about 193.4795452297.

The spelling of 7242778 in words is "seven million, two hundred forty-two thousand, seven hundred seventy-eight".