1145421288 has 48 divisors (see below), whose sum is σ = 3384201600. Its totient is φ = 347097120.

The previous prime is 1145421239. The next prime is 1145421293. The reversal of 1145421288 is 8821245411.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 722328 + ... + 723911.

It is an arithmetic number, because the mean of its divisors is an integer number (70504200).

Almost surely, 2^1145421288 is an apocalyptic number.

1145421288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1145421288 is an abundant number, since it is smaller than the sum of its proper divisors (2238780312).

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

1145421288 is a wasteful number, since it uses less digits than its factorization.

1145421288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446262 (or 1446255 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 1145421288 is about 33844.0731591220. The cubic root of 1145421288 is about 1046.2972490149.

Adding to 1145421288 its reverse (8821245411), we get a palindrome (9966666699).

The spelling of 1145421288 in words is "one billion, one hundred forty-five million, four hundred twenty-one thousand, two hundred eighty-eight".