1145121043 has 8 divisors (see below), whose sum is σ = 1251143856. Its totient is φ = 1039418400.

The previous prime is 1145121041. The next prime is 1145121049. The reversal of 1145121043 is 3401215411.

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

It is a cyclic number.

It is not a de Polignac number, because 1145121043 - 2¹ = 1145121041 is a prime.

It is a super-2 number, since 2×1145121043² = 2622604406242815698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145121041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72528 + ... + 86893.

It is an arithmetic number, because the mean of its divisors is an integer number (156392982).

Almost surely, 2^1145121043 is an apocalyptic number.

1145121043 is a deficient number, since it is larger than the sum of its proper divisors (106022813).

1145121043 is a wasteful number, since it uses less digits than its factorization.

1145121043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160085.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1145121043 is about 33839.6371582202. The cubic root of 1145121043 is about 1046.2058203637.

Adding to 1145121043 its reverse (3401215411), we get a palindrome (4546336454).

The spelling of 1145121043 in words is "one billion, one hundred forty-five million, one hundred twenty-one thousand, forty-three".