752121109 has 2 divisors, whose sum is σ = 752121110. Its totient is φ = 752121108.

The previous prime is 752121103. The next prime is 752121113. The reversal of 752121109 is 901121257.

752121109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 627352209 + 124768900 = 25047^2 + 11170^2 .

It is a cyclic number.

It is not a de Polignac number, because 752121109 - 2²⁷ = 617903381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (752121103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 376060554 + 376060555.

It is an arithmetic number, because the mean of its divisors is an integer number (376060555).

Almost surely, 2^752121109 is an apocalyptic number.

It is an amenable number.

752121109 is a deficient number, since it is larger than the sum of its proper divisors (1).

752121109 is an equidigital number, since it uses as much as digits as its factorization.

752121109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 752121109 is about 27424.8265081112. The cubic root of 752121109 is about 909.4160037549.

The spelling of 752121109 in words is "seven hundred fifty-two million, one hundred twenty-one thousand, one hundred nine".