1121554406 has 32 divisors (see below), whose sum is σ = 1956441600. Its totient is φ = 472260096.

The previous prime is 1121554387. The next prime is 1121554429. The reversal of 1121554406 is 6044551211.

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, 419831 + ... + 422493.

It is an arithmetic number, because the mean of its divisors is an integer number (61138800).

Almost surely, 2^1121554406 is an apocalyptic number.

1121554406 is a deficient number, since it is larger than the sum of its proper divisors (834887194).

1121554406 is a wasteful number, since it uses less digits than its factorization.

1121554406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1121554406 is about 33489.6163907561. The cubic root of 1121554406 is about 1038.9790294736.

The spelling of 1121554406 in words is "one billion, one hundred twenty-one million, five hundred fifty-four thousand, four hundred six".