1227718442 has 16 divisors (see below), whose sum is σ = 1850332032. Its totient is φ = 610948800.

The previous prime is 1227718441. The next prime is 1227718469. The reversal of 1227718442 is 2448177221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1227718396 and 1227718405.

It is not an unprimeable number, because it can be changed into a prime (1227718441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417983 + ... + 420909.

It is an arithmetic number, because the mean of its divisors is an integer number (115645752).

Almost surely, 2^1227718442 is an apocalyptic number.

1227718442 is a deficient number, since it is larger than the sum of its proper divisors (622613590).

1227718442 is a wasteful number, since it uses less digits than its factorization.

1227718442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853.

The product of its digits is 50176, while the sum is 38.

The square root of 1227718442 is about 35038.8133646104. The cubic root of 1227718442 is about 1070.7783785122.

The spelling of 1227718442 in words is "one billion, two hundred twenty-seven million, seven hundred eighteen thousand, four hundred forty-two".