7143641 has 4 divisors (see below), whose sum is σ = 7210512. Its totient is φ = 7076772.

The previous prime is 7143637. The next prime is 7143667. The reversal of 7143641 is 1463417.

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: 1463417 = 31 ⋅47207.

It is a cyclic number.

It is not a de Polignac number, because 7143641 - 2² = 7143637 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7143641.

It is not an unprimeable number, because it can be changed into a prime (7143691) 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, 33275 + ... + 33488.

It is an arithmetic number, because the mean of its divisors is an integer number (1802628).

Almost surely, 2^7143641 is an apocalyptic number.

It is an amenable number.

7143641 is a deficient number, since it is larger than the sum of its proper divisors (66871).

7143641 is a wasteful number, since it uses less digits than its factorization.

7143641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66870.

The product of its digits is 2016, while the sum is 26.

The square root of 7143641 is about 2672.7590613447. The cubic root of 7143641 is about 192.5927230819.

The spelling of 7143641 in words is "seven million, one hundred forty-three thousand, six hundred forty-one".