612339121 has 2 divisors, whose sum is σ = 612339122. Its totient is φ = 612339120.

The previous prime is 612339113. The next prime is 612339137. The reversal of 612339121 is 121933216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 444999025 + 167340096 = 21095^2 + 12936^2 .

It is a cyclic number.

It is not a de Polignac number, because 612339121 - 2³ = 612339113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612339121.

It is not a weakly prime, because it can be changed into another prime (612339151) 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, 306169560 + 306169561.

It is an arithmetic number, because the mean of its divisors is an integer number (306169561).

Almost surely, 2^612339121 is an apocalyptic number.

It is an amenable number.

612339121 is a deficient number, since it is larger than the sum of its proper divisors (1).

612339121 is an equidigital number, since it uses as much as digits as its factorization.

612339121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The square root of 612339121 is about 24745.4868814497. The cubic root of 612339121 is about 849.1752650899.

The spelling of 612339121 in words is "six hundred twelve million, three hundred thirty-nine thousand, one hundred twenty-one".