7142266 has 4 divisors (see below), whose sum is σ = 10713402. Its totient is φ = 3571132.

The previous prime is 7142263. The next prime is 7142269. The reversal of 7142266 is 6622417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6622417 = 157 ⋅42181.

It is an interprime number because it is at equal distance from previous prime (7142263) and next prime (7142269).

It can be written as a sum of positive squares in only one way, i.e., 5978025 + 1164241 = 2445^2 + 1079^2 .

It is a super-2 number, since 2×7142266² = 102023927229512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7142263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1785565 + ... + 1785568.

Almost surely, 2^7142266 is an apocalyptic number.

7142266 is a deficient number, since it is larger than the sum of its proper divisors (3571136).

7142266 is a wasteful number, since it uses less digits than its factorization.

7142266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571135.

The product of its digits is 4032, while the sum is 28.

The square root of 7142266 is about 2672.5018241341. The cubic root of 7142266 is about 192.5803656119.

The spelling of 7142266 in words is "seven million, one hundred forty-two thousand, two hundred sixty-six".