1121562145 has 32 divisors (see below), whose sum is σ = 1499938560. Its totient is φ = 798243840.

The previous prime is 1121562139. The next prime is 1121562161. The reversal of 1121562145 is 5412651211.

1121562145 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1121562145 - 2⁷ = 1121562017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 549036 + ... + 551074.

It is an arithmetic number, because the mean of its divisors is an integer number (46873080).

Almost surely, 2^1121562145 is an apocalyptic number.

It is an amenable number.

1121562145 is a deficient number, since it is larger than the sum of its proper divisors (378376415).

1121562145 is a wasteful number, since it uses less digits than its factorization.

1121562145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265.

The product of its digits is 2400, while the sum is 28.

The square root of 1121562145 is about 33489.7319338331. The cubic root of 1121562145 is about 1038.9814192047.

The spelling of 1121562145 in words is "one billion, one hundred twenty-one million, five hundred sixty-two thousand, one hundred forty-five".