7242459778 has 8 divisors (see below), whose sum is σ = 10864957068. Its totient is φ = 3620807424.

The previous prime is 7242459773. The next prime is 7242459793. The reversal of 7242459778 is 8779542427.

It can be written as a sum of positive squares in 2 ways, for example, as 7227890289 + 14569489 = 85017^2 + 3817^2 .

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

It is not an unprimeable number, because it can be changed into a prime (7242459773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189351 + ... + 224362.

Almost surely, 2^7242459778 is an apocalyptic number.

7242459778 is a deficient number, since it is larger than the sum of its proper divisors (3622497290).

7242459778 is a wasteful number, since it uses less digits than its factorization.

7242459778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422468.

The product of its digits is 7902720, while the sum is 55.

The square root of 7242459778 is about 85102.6426029180. The cubic root of 7242459778 is about 1934.7671158632.

The spelling of 7242459778 in words is "seven billion, two hundred forty-two million, four hundred fifty-nine thousand, seven hundred seventy-eight".