145121301 has 28 divisors (see below), whose sum is σ = 234334828. Its totient is φ = 89299584.

The previous prime is 145121293. The next prime is 145121303. The reversal of 145121301 is 103121541.

145121301 is a `hidden beast` number, since 1 + 451 + 213 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5904900 + 139216401 = 2430^2 + 11799^2 .

It is not a de Polignac number, because 145121301 - 2³ = 145121293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145121303) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1821 + ... + 17133.

It is an arithmetic number, because the mean of its divisors is an integer number (8369101).

Almost surely, 2^145121301 is an apocalyptic number.

It is an amenable number.

145121301 is a deficient number, since it is larger than the sum of its proper divisors (89213527).

145121301 is an equidigital number, since it uses as much as digits as its factorization.

145121301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15344 (or 15329 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 145121301 is about 12046.6302757244. The cubic root of 145121301 is about 525.5052442244.

Adding to 145121301 its reverse (103121541), we get a palindrome (248242842).

The spelling of 145121301 in words is "one hundred forty-five million, one hundred twenty-one thousand, three hundred one".