7442479 has 4 divisors (see below), whose sum is σ = 8119080. Its totient is φ = 6765880.

The previous prime is 7442467. The next prime is 7442489. The reversal of 7442479 is 9742447.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-7442479 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7442459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338284 + ... + 338305.

It is an arithmetic number, because the mean of its divisors is an integer number (2029770).

Almost surely, 2^7442479 is an apocalyptic number.

7442479 is a deficient number, since it is larger than the sum of its proper divisors (676601).

7442479 is a wasteful number, since it uses less digits than its factorization.

7442479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676600.

The product of its digits is 56448, while the sum is 37.

The square root of 7442479 is about 2728.0907242979. The cubic root of 7442479 is about 195.2416814908.

Subtracting 7442479 from its reverse (9742447), we obtain a cube (2299968 = 132³).

It can be divided in two parts, 7442 and 479, that added together give a square (7921 = 89²).

The spelling of 7442479 in words is "seven million, four hundred forty-two thousand, four hundred seventy-nine".