7040161 has 4 divisors (see below), whose sum is σ = 7059712. Its totient is φ = 7020612.

The previous prime is 7040129. The next prime is 7040171. The reversal of 7040161 is 1610407.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1610407 = 577 ⋅2791.

It is a cyclic number.

It is not a de Polignac number, because 7040161 - 2⁵ = 7040129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7040171) 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, 9225 + ... + 9958.

It is an arithmetic number, because the mean of its divisors is an integer number (1764928).

Almost surely, 2^7040161 is an apocalyptic number.

It is an amenable number.

7040161 is a deficient number, since it is larger than the sum of its proper divisors (19551).

7040161 is a wasteful number, since it uses less digits than its factorization.

7040161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19550.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 7040161 is about 2653.3301716899. The cubic root of 7040161 is about 191.6582552914.

Adding to 7040161 its reverse (1610407), we get a palindrome (8650568).

The spelling of 7040161 in words is "seven million, forty thousand, one hundred sixty-one".