1145365121 has 8 divisors (see below), whose sum is σ = 1194193920. Its totient is φ = 1097158608.

The previous prime is 1145365099. The next prime is 1145365159. The reversal of 1145365121 is 1215635411.

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 1145365121 - 2¹⁸ = 1145102977 is a prime.

It is a super-2 number, since 2×1145365121² = 2623722520806689282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145361121) 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, 151811 + ... + 159176.

It is an arithmetic number, because the mean of its divisors is an integer number (149274240).

Almost surely, 2^1145365121 is an apocalyptic number.

It is an amenable number.

1145365121 is a deficient number, since it is larger than the sum of its proper divisors (48828799).

1145365121 is a wasteful number, since it uses less digits than its factorization.

1145365121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311143.

The product of its digits is 3600, while the sum is 29.

The square root of 1145365121 is about 33843.2433581653. The cubic root of 1145365121 is about 1046.2801466210.

The spelling of 1145365121 in words is "one billion, one hundred forty-five million, three hundred sixty-five thousand, one hundred twenty-one".