145360121 has 2 divisors, whose sum is σ = 145360122. Its totient is φ = 145360120.

The previous prime is 145360099. The next prime is 145360123. The reversal of 145360121 is 121063541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103938025 + 41422096 = 10195^2 + 6436^2 .

It is an emirp because it is prime and its reverse (121063541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145360121 - 2⁶ = 145360057 is a prime.

It is a super-2 number, since 2×145360121² = 42259129554269282, which contains 22 as substring.

Together with 145360123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145360123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72680060 + 72680061.

It is an arithmetic number, because the mean of its divisors is an integer number (72680061).

Almost surely, 2^145360121 is an apocalyptic number.

It is an amenable number.

145360121 is a deficient number, since it is larger than the sum of its proper divisors (1).

145360121 is an equidigital number, since it uses as much as digits as its factorization.

145360121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 145360121 is about 12056.5385165063. The cubic root of 145360121 is about 525.7933535060.

The spelling of 145360121 in words is "one hundred forty-five million, three hundred sixty thousand, one hundred twenty-one".