145410321 has 32 divisors (see below), whose sum is σ = 231356160. Its totient is φ = 79478784.

The previous prime is 145410277. The next prime is 145410329. The reversal of 145410321 is 123014541.

It is not a de Polignac number, because 145410321 - 2⁷ = 145410193 is a prime.

It is a super-2 number, since 2×145410321² = 42288322906646082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145410329) 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 31 ways as a sum of consecutive naturals, for example, 67761 + ... + 69873.

It is an arithmetic number, because the mean of its divisors is an integer number (7229880).

Almost surely, 2^145410321 is an apocalyptic number.

It is an amenable number.

145410321 is a deficient number, since it is larger than the sum of its proper divisors (85945839).

145410321 is a wasteful number, since it uses less digits than its factorization.

145410321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 145410321 is about 12058.6201946989. The cubic root of 145410321 is about 525.8538739758.

Adding to 145410321 its reverse (123014541), we get a palindrome (268424862).

The spelling of 145410321 in words is "one hundred forty-five million, four hundred ten thousand, three hundred twenty-one".