1200754921 has 2 divisors, whose sum is σ = 1200754922. Its totient is φ = 1200754920.

The previous prime is 1200754847. The next prime is 1200754939. The reversal of 1200754921 is 1294570021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1165471321 + 35283600 = 34139^2 + 5940^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200754921 - 2¹⁷ = 1200623849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200751921) 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 as a sum of consecutive naturals, namely, 600377460 + 600377461.

It is an arithmetic number, because the mean of its divisors is an integer number (600377461).

Almost surely, 2^1200754921 is an apocalyptic number.

It is an amenable number.

1200754921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200754921 is an equidigital number, since it uses as much as digits as its factorization.

1200754921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1200754921 is about 34651.9107842555. The cubic root of 1200754921 is about 1062.8813622665.

The spelling of 1200754921 in words is "one billion, two hundred million, seven hundred fifty-four thousand, nine hundred twenty-one".