1205021134 has 8 divisors (see below), whose sum is σ = 1811613240. Its totient is φ = 601150056.

The previous prime is 1205021117. The next prime is 1205021161. The reversal of 1205021134 is 4311205021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 679149 + ... + 680920.

It is an arithmetic number, because the mean of its divisors is an integer number (226451655).

Almost surely, 2^1205021134 is an apocalyptic number.

1205021134 is a deficient number, since it is larger than the sum of its proper divisors (606592106).

1205021134 is a wasteful number, since it uses less digits than its factorization.

1205021134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360514.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1205021134 is about 34713.4143235724. The cubic root of 1205021134 is about 1064.1386598034.

Adding to 1205021134 its reverse (4311205021), we get a palindrome (5516226155).

The spelling of 1205021134 in words is "one billion, two hundred five million, twenty-one thousand, one hundred thirty-four".