1204213505 has 16 divisors (see below), whose sum is σ = 1602272448. Its totient is φ = 861432000.

The previous prime is 1204213481. The next prime is 1204213531. The reversal of 1204213505 is 5053124021.

It is not a de Polignac number, because 1204213505 - 2⁶ = 1204213441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176111 + ... + 182820.

It is an arithmetic number, because the mean of its divisors is an integer number (100142028).

Almost surely, 2^1204213505 is an apocalyptic number.

It is an amenable number.

1204213505 is a deficient number, since it is larger than the sum of its proper divisors (398058943).

1204213505 is a wasteful number, since it uses less digits than its factorization.

1204213505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359008.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1204213505 is about 34701.7795653191. The cubic root of 1204213505 is about 1063.9008710789.

Adding to 1204213505 its reverse (5053124021), we get a palindrome (6257337526).

The spelling of 1204213505 in words is "one billion, two hundred four million, two hundred thirteen thousand, five hundred five".