145121568 has 48 divisors (see below), whose sum is σ = 394087680. Its totient is φ = 46704896.

The previous prime is 145121567. The next prime is 145121573. The reversal of 145121568 is 865121541.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (145121567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23280 + ... + 28847.

It is an arithmetic number, because the mean of its divisors is an integer number (8210160).

Almost surely, 2^145121568 is an apocalyptic number.

It is an amenable number.

145121568 is an abundant number, since it is smaller than the sum of its proper divisors (248966112).

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

145121568 is a wasteful number, since it uses less digits than its factorization.

145121568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52169 (or 52161 counting only the distinct ones).

The product of its digits is 9600, while the sum is 33.

The square root of 145121568 is about 12046.6413576565. The cubic root of 145121568 is about 525.5055665061.

The spelling of 145121568 in words is "one hundred forty-five million, one hundred twenty-one thousand, five hundred sixty-eight".