7042109 has 4 divisors (see below), whose sum is σ = 7058880. Its totient is φ = 7025340.

The previous prime is 7042093. The next prime is 7042121. The reversal of 7042109 is 9012407.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7042109 - 2⁴ = 7042093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7042129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7739 + ... + 8600.

It is an arithmetic number, because the mean of its divisors is an integer number (1764720).

Almost surely, 2^7042109 is an apocalyptic number.

It is an amenable number.

7042109 is a deficient number, since it is larger than the sum of its proper divisors (16771).

7042109 is a wasteful number, since it uses less digits than its factorization.

7042109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16770.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 7042109 is about 2653.6972321650. The cubic root of 7042109 is about 191.6759308272.

The spelling of 7042109 in words is "seven million, forty-two thousand, one hundred nine".