1227125747 has 2 divisors, whose sum is σ = 1227125748. Its totient is φ = 1227125746.

The previous prime is 1227125743. The next prime is 1227125761. The reversal of 1227125747 is 7475217221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1227125747 - 2² = 1227125743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1227125747.

It is not a weakly prime, because it can be changed into another prime (1227125741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613562873 + 613562874.

It is an arithmetic number, because the mean of its divisors is an integer number (613562874).

Almost surely, 2^1227125747 is an apocalyptic number.

1227125747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227125747 is an equidigital number, since it uses as much as digits as its factorization.

1227125747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54880, while the sum is 38.

The square root of 1227125747 is about 35030.3546513592. The cubic root of 1227125747 is about 1070.6060406416.

The spelling of 1227125747 in words is "one billion, two hundred twenty-seven million, one hundred twenty-five thousand, seven hundred forty-seven".