1227772142 has 24 divisors (see below), whose sum is σ = 1905872328. Its totient is φ = 593142080.

The previous prime is 1227772129. The next prime is 1227772151. The reversal of 1227772142 is 2412777221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358028 + ... + 361440.

It is an arithmetic number, because the mean of its divisors is an integer number (79411347).

Almost surely, 2^1227772142 is an apocalyptic number.

1227772142 is a deficient number, since it is larger than the sum of its proper divisors (678100186).

1227772142 is a wasteful number, since it uses less digits than its factorization.

1227772142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604 (or 3563 counting only the distinct ones).

The product of its digits is 21952, while the sum is 35.

The square root of 1227772142 is about 35039.5796493052. The cubic root of 1227772142 is about 1070.7939901157.

The spelling of 1227772142 in words is "one billion, two hundred twenty-seven million, seven hundred seventy-two thousand, one hundred forty-two".