7141921 has 8 divisors (see below), whose sum is σ = 7607520. Its totient is φ = 6681408.

The previous prime is 7141919. The next prime is 7141931. The reversal of 7141921 is 1291417.

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

It is not a de Polignac number, because 7141921 - 2¹ = 7141919 is a prime.

It is an Ulam number.

It is a Duffinian number.

7141921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7141931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1870 + ... + 4216.

It is an arithmetic number, because the mean of its divisors is an integer number (950940).

Almost surely, 2^7141921 is an apocalyptic number.

It is an amenable number.

7141921 is a deficient number, since it is larger than the sum of its proper divisors (465599).

7141921 is a wasteful number, since it uses less digits than its factorization.

7141921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543.

The product of its digits is 504, while the sum is 25.

The square root of 7141921 is about 2672.4372770937. The cubic root of 7141921 is about 192.5772647615.

Subtracting from 7141921 its product of digits (504), we obtain a palindrome (7141417).

The spelling of 7141921 in words is "seven million, one hundred forty-one thousand, nine hundred twenty-one".