1145201039 has 16 divisors (see below), whose sum is σ = 1294859520. Its totient is φ = 1007086080.

The previous prime is 1145201017. The next prime is 1145201081. The reversal of 1145201039 is 9301025411.

It is a cyclic number.

It is not a de Polignac number, because 1145201039 - 2²⁰ = 1144152463 is a prime.

It is a super-2 number, since 2×1145201039² = 2622970839453359042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1145200999 and 1145201017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145201089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22184 + ... + 52749.

It is an arithmetic number, because the mean of its divisors is an integer number (80928720).

Almost surely, 2^1145201039 is an apocalyptic number.

1145201039 is a deficient number, since it is larger than the sum of its proper divisors (149658481).

1145201039 is a wasteful number, since it uses less digits than its factorization.

1145201039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75010.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1145201039 is about 33840.8191242470. The cubic root of 1145201039 is about 1046.2301817861.

The spelling of 1145201039 in words is "one billion, one hundred forty-five million, two hundred one thousand, thirty-nine".