1200123413 has 2 divisors, whose sum is σ = 1200123414. Its totient is φ = 1200123412.

The previous prime is 1200123329. The next prime is 1200123439. The reversal of 1200123413 is 3143210021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1103435524 + 96687889 = 33218^2 + 9833^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200123413 - 2¹² = 1200119317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200123391 and 1200123400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200123473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600061706 + 600061707.

It is an arithmetic number, because the mean of its divisors is an integer number (600061707).

Almost surely, 2^1200123413 is an apocalyptic number.

It is an amenable number.

1200123413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200123413 is an equidigital number, since it uses as much as digits as its factorization.

1200123413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1200123413 is about 34642.7974187998. The cubic root of 1200123413 is about 1062.6949973455.

Adding to 1200123413 its reverse (3143210021), we get a palindrome (4343333434).

The spelling of 1200123413 in words is "one billion, two hundred million, one hundred twenty-three thousand, four hundred thirteen".