145410121 has 4 divisors (see below), whose sum is σ = 145434244. Its totient is φ = 145386000.

The previous prime is 145410101. The next prime is 145410127. The reversal of 145410121 is 121014541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 34339600 + 111070521 = 5860^2 + 10539^2 .

It is a cyclic number.

It is not a de Polignac number, because 145410121 - 2¹⁷ = 145279049 is a prime.

It is a super-2 number, since 2×145410121² = 42288206578469282, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145410127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5671 + ... + 17971.

It is an arithmetic number, because the mean of its divisors is an integer number (36358561).

Almost surely, 2^145410121 is an apocalyptic number.

It is an amenable number.

145410121 is a deficient number, since it is larger than the sum of its proper divisors (24123).

145410121 is a wasteful number, since it uses less digits than its factorization.

145410121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24122.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 145410121 is about 12058.6119018733. The cubic root of 145410121 is about 525.8536328860.

Adding to 145410121 its reverse (121014541), we get a palindrome (266424662).

The spelling of 145410121 in words is "one hundred forty-five million, four hundred ten thousand, one hundred twenty-one".