7142191 has 6 divisors (see below), whose sum is σ = 8308320. Its totient is φ = 6121836.

The previous prime is 7142189. The next prime is 7142203. The reversal of 7142191 is 1912417.

It is not a de Polignac number, because 7142191 - 2¹ = 7142189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72831 + ... + 72928.

It is an arithmetic number, because the mean of its divisors is an integer number (1384720).

Almost surely, 2^7142191 is an apocalyptic number.

7142191 is a deficient number, since it is larger than the sum of its proper divisors (1166129).

7142191 is a wasteful number, since it uses less digits than its factorization.

7142191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145773 (or 145766 counting only the distinct ones).

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

The square root of 7142191 is about 2672.4877923014. The cubic root of 7142191 is about 192.5796915225.

The spelling of 7142191 in words is "seven million, one hundred forty-two thousand, one hundred ninety-one".