1121506000 has 40 divisors (see below), whose sum is σ = 2711806344. Its totient is φ = 448601600.

The previous prime is 1121505991. The next prime is 1121506021. The reversal of 1121506000 is 6051211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 358420624 + 763085376 = 18932^2 + 27624^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

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 7 ways as a sum of consecutive naturals, for example, 278377 + ... + 282376.

Almost surely, 2^1121506000 is an apocalyptic number.

1121506000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121506000 is an abundant number, since it is smaller than the sum of its proper divisors (1590300344).

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

1121506000 is an equidigital number, since it uses as much as digits as its factorization.

1121506000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560776 (or 560760 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1121506000 is about 33488.8936813386. The cubic root of 1121506000 is about 1038.9640819026.

Adding to 1121506000 its reverse (6051211), we get a palindrome (1127557211).

The spelling of 1121506000 in words is "one billion, one hundred twenty-one million, five hundred six thousand".