1227842152 has 24 divisors (see below), whose sum is σ = 2311203510. Its totient is φ = 611527680.

The previous prime is 1227842071. The next prime is 1227842159. The reversal of 1227842152 is 2512487221.

It can be written as a sum of positive squares in 3 ways, for example, as 1170597796 + 57244356 = 34214^2 + 7566^2 .

It is a super-2 number, since 2×1227842152² = 3015192700455982208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1227842159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2127688 + ... + 2128264.

Almost surely, 2^1227842152 is an apocalyptic number.

It is an amenable number.

1227842152 is a deficient number, since it is larger than the sum of its proper divisors (1083361358).

1227842152 is an frugal number, since it uses more digits than its factorization.

1227842152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621 (or 1040 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 1227842152 is about 35040.5786481902. The cubic root of 1227842152 is about 1070.8143426604.

The spelling of 1227842152 in words is "one billion, two hundred twenty-seven million, eight hundred forty-two thousand, one hundred fifty-two".