1154244047 has 18 divisors (see below), whose sum is σ = 1281674184. Its totient is φ = 1038665320.

The previous prime is 1154244023. The next prime is 1154244097. The reversal of 1154244047 is 7404424511.

It is not a de Polignac number, because 1154244047 - 2¹⁴ = 1154227663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154244097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4829354 + ... + 4829592.

Almost surely, 2^1154244047 is an apocalyptic number.

1154244047 is a deficient number, since it is larger than the sum of its proper divisors (127430137).

1154244047 is an equidigital number, since it uses as much as digits as its factorization.

1154244047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 1154244047 is about 33974.1673481485. The cubic root of 1154244047 is about 1048.9767952184.

Adding to 1154244047 its reverse (7404424511), we get a palindrome (8558668558).

The spelling of 1154244047 in words is "one billion, one hundred fifty-four million, two hundred forty-four thousand, forty-seven".