7242439947 has 8 divisors (see below), whose sum is σ = 9660133440. Its totient is φ = 4826519880.

The previous prime is 7242439937. The next prime is 7242439951. The reversal of 7242439947 is 7499342427.

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

It is not a de Polignac number, because 7242439947 - 2⁸ = 7242439691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7242439947.

It is not an unprimeable number, because it can be changed into a prime (7242439937) 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, 433797 + ... + 450182.

It is an arithmetic number, because the mean of its divisors is an integer number (1207516680).

Almost surely, 2^7242439947 is an apocalyptic number.

7242439947 is a deficient number, since it is larger than the sum of its proper divisors (2417693493).

7242439947 is a wasteful number, since it uses less digits than its factorization.

7242439947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886713.

The product of its digits is 3048192, while the sum is 51.

The square root of 7242439947 is about 85102.5260905926. The cubic root of 7242439947 is about 1934.7653499621.

The spelling of 7242439947 in words is "seven billion, two hundred forty-two million, four hundred thirty-nine thousand, nine hundred forty-seven".