7742222 has 4 divisors (see below), whose sum is σ = 11613336. Its totient is φ = 3871110.

The previous prime is 7742221. The next prime is 7742239. The reversal of 7742222 is 2222477.

It is a happy number.

It is a semiprime because it is the product of two primes.

7742222 is a modest number, since divided by 2222 gives 774 as remainder.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 7742191 and 7742200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7742221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935554 + ... + 1935557.

It is an arithmetic number, because the mean of its divisors is an integer number (2903334).

Almost surely, 2^7742222 is an apocalyptic number.

7742222 is a deficient number, since it is larger than the sum of its proper divisors (3871114).

7742222 is a wasteful number, since it uses less digits than its factorization.

7742222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871113.

The product of its digits is 3136, while the sum is 26.

The square root of 7742222 is about 2782.4848606956. The cubic root of 7742222 is about 197.8283551394.

Adding to 7742222 its reverse (2222477), we get a palindrome (9964699).

The spelling of 7742222 in words is "seven million, seven hundred forty-two thousand, two hundred twenty-two".