1201055406 has 16 divisors (see below), whose sum is σ = 2543411664. Its totient is φ = 376801664.

The previous prime is 1201055399. The next prime is 1201055497. The reversal of 1201055406 is 6045501021.

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 7 ways as a sum of consecutive naturals, for example, 5887425 + ... + 5887628.

It is an arithmetic number, because the mean of its divisors is an integer number (158963229).

Almost surely, 2^1201055406 is an apocalyptic number.

1201055406 is an abundant number, since it is smaller than the sum of its proper divisors (1342356258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201055406 is a wasteful number, since it uses less digits than its factorization.

1201055406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11775075.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1201055406 is about 34656.2462768258. The cubic root of 1201055406 is about 1062.9700157358.

Adding to 1201055406 its reverse (6045501021), we get a palindrome (7246556427).

The spelling of 1201055406 in words is "one billion, two hundred one million, fifty-five thousand, four hundred six".