6999742 has 4 divisors (see below), whose sum is σ = 10499616. Its totient is φ = 3499870.

The previous prime is 6999731. The next prime is 6999749. The reversal of 6999742 is 2479996.

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

It is a junction number, because it is equal to n+sod(n) for n = 6999692 and 6999701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1749934 + ... + 1749937.

It is an arithmetic number, because the mean of its divisors is an integer number (2624904).

Almost surely, 2^6999742 is an apocalyptic number.

6999742 is a deficient number, since it is larger than the sum of its proper divisors (3499874).

6999742 is a wasteful number, since it uses less digits than its factorization.

6999742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3499873.

The product of its digits is 244944, while the sum is 46.

The square root of 6999742 is about 2645.7025531983. The cubic root of 6999742 is about 191.2907680758.

The spelling of 6999742 in words is "six million, nine hundred ninety-nine thousand, seven hundred forty-two".