1140305545 has 4 divisors (see below), whose sum is σ = 1368366660. Its totient is φ = 912244432.

The previous prime is 1140305533. The next prime is 1140305557. The reversal of 1140305545 is 5455030411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5455030411 = 10313 ⋅528947.

It is an interprime number because it is at equal distance from previous prime (1140305533) and next prime (1140305557).

It can be written as a sum of positive squares in 2 ways, for example, as 614841616 + 525463929 = 24796^2 + 22923^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140305545 - 2⁷ = 1140305417 is a prime.

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, 114030550 + ... + 114030559.

It is an arithmetic number, because the mean of its divisors is an integer number (342091665).

Almost surely, 2^1140305545 is an apocalyptic number.

It is an amenable number.

1140305545 is a deficient number, since it is larger than the sum of its proper divisors (228061115).

1140305545 is an equidigital number, since it uses as much as digits as its factorization.

1140305545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228061114.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1140305545 is about 33768.4104600735. The cubic root of 1140305545 is about 1044.7372476459.

Adding to 1140305545 its reverse (5455030411), we get a palindrome (6595335956).

The spelling of 1140305545 in words is "one billion, one hundred forty million, three hundred five thousand, five hundred forty-five".