1201055405 has 16 divisors (see below), whose sum is σ = 1580451264. Its totient is φ = 868961280.

The previous prime is 1201055399. The next prime is 1201055497. The reversal of 1201055405 is 5045501021.

It is a happy number.

It is not a de Polignac number, because 1201055405 - 2³⁰ = 127313581 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 45959 + ... + 67188.

It is an arithmetic number, because the mean of its divisors is an integer number (98778204).

Almost surely, 2^1201055405 is an apocalyptic number.

It is an amenable number.

1201055405 is a deficient number, since it is larger than the sum of its proper divisors (379395859).

1201055405 is a wasteful number, since it uses less digits than its factorization.

1201055405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113356.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 1201055405 is about 34656.2462623984. The cubic root of 1201055405 is about 1062.9700154408.

Adding to 1201055405 its reverse (5045501021), we get a palindrome (6246556426).

The spelling of 1201055405 in words is "one billion, two hundred one million, fifty-five thousand, four hundred five".