1243110051 has 16 divisors (see below), whose sum is σ = 1844773920. Its totient is φ = 827331840.

The previous prime is 1243110047. The next prime is 1243110079. The reversal of 1243110051 is 1500113421.

It is not a de Polignac number, because 1243110051 - 2² = 1243110047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243110251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22810 + ... + 54831.

It is an arithmetic number, because the mean of its divisors is an integer number (115298370).

Almost surely, 2^1243110051 is an apocalyptic number.

1243110051 is a deficient number, since it is larger than the sum of its proper divisors (601663869).

1243110051 is an equidigital number, since it uses as much as digits as its factorization.

1243110051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78243 (or 78237 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1243110051 is about 35257.7658254178. The cubic root of 1243110051 is about 1075.2345047446.

Adding to 1243110051 its reverse (1500113421), we get a palindrome (2743223472).

The spelling of 1243110051 in words is "one billion, two hundred forty-three million, one hundred ten thousand, fifty-one".