1400323121 has 2 divisors, whose sum is σ = 1400323122. Its totient is φ = 1400323120.

The previous prime is 1400323117. The next prime is 1400323139. The reversal of 1400323121 is 1213230041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1399882225 + 440896 = 37415^2 + 664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400323121 - 2² = 1400323117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1400323121.

It is not a weakly prime, because it can be changed into another prime (1400323181) 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 as a sum of consecutive naturals, namely, 700161560 + 700161561.

It is an arithmetic number, because the mean of its divisors is an integer number (700161561).

Almost surely, 2^1400323121 is an apocalyptic number.

It is an amenable number.

1400323121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400323121 is an equidigital number, since it uses as much as digits as its factorization.

1400323121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1400323121 is about 37420.8915046128. The cubic root of 1400323121 is about 1118.7750001966.

Adding to 1400323121 its reverse (1213230041), we get a palindrome (2613553162).

The spelling of 1400323121 in words is "one billion, four hundred million, three hundred twenty-three thousand, one hundred twenty-one".