145350121 has 6 divisors (see below), whose sum is σ = 169080810. Its totient is φ = 124585776.

The previous prime is 145350113. The next prime is 145350131. The reversal of 145350121 is 121053541.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 117418896 + 27931225 = 10836^2 + 5285^2 .

It is not a de Polignac number, because 145350121 - 2³ = 145350113 is a prime.

It is a super-2 number, since 2×145350121² = 42253315349429282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145350092 and 145350101.

It is not an unprimeable number, because it can be changed into a prime (145350131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1483116 + ... + 1483213.

It is an arithmetic number, because the mean of its divisors is an integer number (28180135).

Almost surely, 2^145350121 is an apocalyptic number.

It is an amenable number.

145350121 is a deficient number, since it is larger than the sum of its proper divisors (23730689).

145350121 is an equidigital number, since it uses as much as digits as its factorization.

145350121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966343 (or 2966336 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 145350121 is about 12056.1237966438. The cubic root of 145350121 is about 525.7812959713.

The spelling of 145350121 in words is "one hundred forty-five million, three hundred fifty thousand, one hundred twenty-one".