1145556442 has 8 divisors (see below), whose sum is σ = 1741873716. Its totient is φ = 564931872.

The previous prime is 1145556431. The next prime is 1145556479. The reversal of 1145556442 is 2446555411.

It can be written as a sum of positive squares in 2 ways, for example, as 957345481 + 188210961 = 30941^2 + 13719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3922993 + ... + 3923284.

Almost surely, 2^1145556442 is an apocalyptic number.

1145556442 is a deficient number, since it is larger than the sum of its proper divisors (596317274).

1145556442 is an equidigital number, since it uses as much as digits as its factorization.

1145556442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7846352.

The product of its digits is 96000, while the sum is 37.

The square root of 1145556442 is about 33846.0698161544. The cubic root of 1145556442 is about 1046.3384000156.

The spelling of 1145556442 in words is "one billion, one hundred forty-five million, five hundred fifty-six thousand, four hundred forty-two".