1154021264 has 40 divisors (see below), whose sum is σ = 2441093760. Its totient is φ = 524144000.

The previous prime is 1154021249. The next prime is 1154021279. The reversal of 1154021264 is 4621204511.

It is an interprime number because it is at equal distance from previous prime (1154021249) and next prime (1154021279).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412382 + ... + 415170.

It is an arithmetic number, because the mean of its divisors is an integer number (61027344).

Almost surely, 2^1154021264 is an apocalyptic number.

It is an amenable number.

1154021264 is an abundant number, since it is smaller than the sum of its proper divisors (1287072496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1154021264 is a wasteful number, since it uses less digits than its factorization.

1154021264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159 (or 5153 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1154021264 is about 33970.8884782250. Note that the first 3 decimals coincide. The cubic root of 1154021264 is about 1048.9093024917.

Adding to 1154021264 its reverse (4621204511), we get a palindrome (5775225775).

The spelling of 1154021264 in words is "one billion, one hundred fifty-four million, twenty-one thousand, two hundred sixty-four".