1201455252 has 18 divisors (see below), whose sum is σ = 3037011978. Its totient is φ = 400485072.

The previous prime is 1201455223. The next prime is 1201455271. The reversal of 1201455252 is 2525541021.

1201455252 is a `hidden beast` number, since 1 + 201 + 455 + 2 + 5 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1170050436 + 31404816 = 34206^2 + 5604^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16686843 + ... + 16686914.

Almost surely, 2^1201455252 is an apocalyptic number.

1201455252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201455252 is an abundant number, since it is smaller than the sum of its proper divisors (1835556726).

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

1201455252 is a wasteful number, since it uses less digits than its factorization.

1201455252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33373767 (or 33373762 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1201455252 is about 34662.0145404159. The cubic root of 1201455252 is about 1063.0879612112.

Adding to 1201455252 its reverse (2525541021), we get a palindrome (3726996273).

The spelling of 1201455252 in words is "one billion, two hundred one million, four hundred fifty-five thousand, two hundred fifty-two".