1205026061 has 4 divisors (see below), whose sum is σ = 1206207324. Its totient is φ = 1203844800.

The previous prime is 1205026057. The next prime is 1205026087. The reversal of 1205026061 is 1606205021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 653058025 + 551968036 = 25555^2 + 23494^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205026061 - 2² = 1205026057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205026001) 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 in 3 ways as a sum of consecutive naturals, for example, 589100 + ... + 591141.

It is an arithmetic number, because the mean of its divisors is an integer number (301551831).

Almost surely, 2^1205026061 is an apocalyptic number.

It is an amenable number.

1205026061 is a deficient number, since it is larger than the sum of its proper divisors (1181263).

1205026061 is a wasteful number, since it uses less digits than its factorization.

1205026061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181262.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1205026061 is about 34713.4852903018. The cubic root of 1205026061 is about 1064.1401101248.

The spelling of 1205026061 in words is "one billion, two hundred five million, twenty-six thousand, sixty-one".