7042091 has 8 divisors (see below), whose sum is σ = 8158944. Its totient is φ = 5952960.

The previous prime is 7042081. The next prime is 7042093. The reversal of 7042091 is 1902407.

7042091 = 1000² + 1001² + ... + 1006².

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

It is a cyclic number.

It is not a de Polignac number, because 7042091 - 2²² = 2847787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7042093) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6380 + ... + 7401.

It is an arithmetic number, because the mean of its divisors is an integer number (1019868).

Almost surely, 2^7042091 is an apocalyptic number.

7042091 is a deficient number, since it is larger than the sum of its proper divisors (1116853).

7042091 is a wasteful number, since it uses less digits than its factorization.

7042091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13861.

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

The square root of 7042091 is about 2653.6938406681. The cubic root of 7042091 is about 191.6757675158.

Adding to 7042091 its reverse (1902407), we get a palindrome (8944498).

The spelling of 7042091 in words is "seven million, forty-two thousand, ninety-one".