1147272205 has 8 divisors (see below), whose sum is σ = 1378345752. Its totient is φ = 916738368.

The previous prime is 1147272109. The next prime is 1147272233. The reversal of 1147272205 is 5022727411.

It can be written as a sum of positive squares in 4 ways, for example, as 4088484 + 1143183721 = 2022^2 + 33811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1147272205 - 2⁹ = 1147271693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130234 + ... + 138763.

It is an arithmetic number, because the mean of its divisors is an integer number (172293219).

Almost surely, 2^1147272205 is an apocalyptic number.

It is an amenable number.

1147272205 is a deficient number, since it is larger than the sum of its proper divisors (231073547).

1147272205 is an equidigital number, since it uses as much as digits as its factorization.

1147272205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269855.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 1147272205 is about 33871.4068943113. The cubic root of 1147272205 is about 1046.8605256542.

Adding to 1147272205 its reverse (5022727411), we get a palindrome (6169999616).

The spelling of 1147272205 in words is "one billion, one hundred forty-seven million, two hundred seventy-two thousand, two hundred five".