7222142 has 4 divisors (see below), whose sum is σ = 10833216. Its totient is φ = 3611070.

The previous prime is 7222133. The next prime is 7222153. The reversal of 7222142 is 2412227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2412227 = 239 ⋅10093.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805534 + ... + 1805537.

It is an arithmetic number, because the mean of its divisors is an integer number (2708304).

Almost surely, 2^7222142 is an apocalyptic number.

7222142 is a deficient number, since it is larger than the sum of its proper divisors (3611074).

7222142 is a wasteful number, since it uses less digits than its factorization.

7222142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611073.

The product of its digits is 448, while the sum is 20.

The square root of 7222142 is about 2687.4043238783. The cubic root of 7222142 is about 193.2956175603.

Adding to 7222142 its reverse (2412227), we get a palindrome (9634369).

The spelling of 7222142 in words is "seven million, two hundred twenty-two thousand, one hundred forty-two".