7912742 has 8 divisors (see below), whose sum is σ = 11892096. Its totient is φ = 3948712.

The previous prime is 7912739. The next prime is 7912763. The reversal of 7912742 is 2472197.

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

It is a super-2 number, since 2×7912742² = 125222971917128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7912699 and 7912708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2438 + ... + 4665.

It is an arithmetic number, because the mean of its divisors is an integer number (1486512).

Almost surely, 2^7912742 is an apocalyptic number.

7912742 is a deficient number, since it is larger than the sum of its proper divisors (3979354).

7912742 is a wasteful number, since it uses less digits than its factorization.

7912742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7662.

The product of its digits is 7056, while the sum is 32.

The square root of 7912742 is about 2812.9596513281. The cubic root of 7912742 is about 199.2701901270.

It can be divided in two parts, 79 and 12742, that added together give a palindrome (12821).

The spelling of 7912742 in words is "seven million, nine hundred twelve thousand, seven hundred forty-two".