1210144155 has 16 divisors (see below), whose sum is σ = 2112251904. Its totient is φ = 586736480.

The previous prime is 1210144123. The next prime is 1210144189. The reversal of 1210144155 is 5514410121.

It is not a de Polignac number, because 1210144155 - 2⁵ = 1210144123 is a prime.

It is an unprimeable number.

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, 3666939 + ... + 3667268.

It is an arithmetic number, because the mean of its divisors is an integer number (132015744).

Almost surely, 2^1210144155 is an apocalyptic number.

1210144155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1210144155 is a deficient number, since it is larger than the sum of its proper divisors (902107749).

1210144155 is a wasteful number, since it uses less digits than its factorization.

1210144155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7334226.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1210144155 is about 34787.1262825776. The cubic root of 1210144155 is about 1065.6445524114.

Adding to 1210144155 its reverse (5514410121), we get a palindrome (6724554276).

The spelling of 1210144155 in words is "one billion, two hundred ten million, one hundred forty-four thousand, one hundred fifty-five".