1201388743 has 2 divisors, whose sum is σ = 1201388744. Its totient is φ = 1201388742.

The previous prime is 1201388737. The next prime is 1201388777. The reversal of 1201388743 is 3478831021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201388743 - 2²¹ = 1199291591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201388443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600694371 + 600694372.

It is an arithmetic number, because the mean of its divisors is an integer number (600694372).

Almost surely, 2^1201388743 is an apocalyptic number.

1201388743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201388743 is an equidigital number, since it uses as much as digits as its factorization.

1201388743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1201388743 is about 34661.0551339684. The cubic root of 1201388743 is about 1063.0683443835.

It can be divided in two parts, 120138 and 8743, that added together give a square (128881 = 359²).

The spelling of 1201388743 in words is "one billion, two hundred one million, three hundred eighty-eight thousand, seven hundred forty-three".