7919742 has 16 divisors (see below), whose sum is σ = 15908112. Its totient is φ = 2628480.

The previous prime is 7919741. The next prime is 7919801. The reversal of 7919742 is 2479197.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7919742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7919741) 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, 1293 + ... + 4184.

It is an arithmetic number, because the mean of its divisors is an integer number (994257).

Almost surely, 2^7919742 is an apocalyptic number.

7919742 is an abundant number, since it is smaller than the sum of its proper divisors (7988370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7919742 is a wasteful number, since it uses less digits than its factorization.

7919742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723.

The product of its digits is 31752, while the sum is 39.

The square root of 7919742 is about 2814.2036173667. The cubic root of 7919742 is about 199.3289342052.

The spelling of 7919742 in words is "seven million, nine hundred nineteen thousand, seven hundred forty-two".