1101405252 has 12 divisors (see below), whose sum is σ = 2569945616. Its totient is φ = 367135080.

The previous prime is 1101405223. The next prime is 1101405287. The reversal of 1101405252 is 2525041011.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45891874 + ... + 45891897.

Almost surely, 2^1101405252 is an apocalyptic number.

1101405252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101405252 is an abundant number, since it is smaller than the sum of its proper divisors (1468540364).

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

1101405252 is a wasteful number, since it uses less digits than its factorization.

1101405252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91783778 (or 91783776 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1101405252 is about 33187.4261129121. The cubic root of 1101405252 is about 1032.7195083092.

Adding to 1101405252 its reverse (2525041011), we get a palindrome (3626446263).

The spelling of 1101405252 in words is "one billion, one hundred one million, four hundred five thousand, two hundred fifty-two".