1145724047 has 16 divisors (see below), whose sum is σ = 1294755840. Its totient is φ = 1005910752.

The previous prime is 1145724037. The next prime is 1145724067. The reversal of 1145724047 is 7404275411.

It is a cyclic number.

It is not a de Polignac number, because 1145724047 - 2⁴ = 1145724031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1145723998 and 1145724016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145724017) 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, 42818 + ... + 64224.

It is an arithmetic number, because the mean of its divisors is an integer number (80922240).

Almost surely, 2^1145724047 is an apocalyptic number.

1145724047 is a deficient number, since it is larger than the sum of its proper divisors (149031793).

1145724047 is a wasteful number, since it uses less digits than its factorization.

1145724047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21622.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 1145724047 is about 33848.5457146980. The cubic root of 1145724047 is about 1046.3894270359.

Adding to 1145724047 its reverse (7404275411), we get a palindrome (8549999458).

The spelling of 1145724047 in words is "one billion, one hundred forty-five million, seven hundred twenty-four thousand, forty-seven".