1200140123 has 16 divisors (see below), whose sum is σ = 1478151360. Its totient is φ = 948882816.

The previous prime is 1200140119. The next prime is 1200140171. The reversal of 1200140123 is 3210410021.

It is not a de Polignac number, because 1200140123 - 2² = 1200140119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200140098 and 1200140107.

It is not an unprimeable number, because it can be changed into a prime (1200140423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151661 + ... + 159377.

It is an arithmetic number, because the mean of its divisors is an integer number (92384460).

Almost surely, 2^1200140123 is an apocalyptic number.

1200140123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1200140123 is a deficient number, since it is larger than the sum of its proper divisors (278011237).

1200140123 is a wasteful number, since it uses less digits than its factorization.

1200140123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1200140123 is about 34643.0385936338. The cubic root of 1200140123 is about 1062.6999294913.

Adding to 1200140123 its reverse (3210410021), we get a palindrome (4410550144).

The spelling of 1200140123 in words is "one billion, two hundred million, one hundred forty thousand, one hundred twenty-three".