145928401 has 4 divisors (see below), whose sum is σ = 145980772. Its totient is φ = 145876032.

The previous prime is 145928383. The next prime is 145928423. The reversal of 145928401 is 104829541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104829541 = 2017 ⋅51973.

It can be written as a sum of positive squares in 2 ways, for example, as 130530625 + 15397776 = 11425^2 + 3924^2 .

It is a cyclic number.

It is not a de Polignac number, because 145928401 - 2⁷ = 145928273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145928801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21756 + ... + 27661.

It is an arithmetic number, because the mean of its divisors is an integer number (36495193).

Almost surely, 2^145928401 is an apocalyptic number.

It is an amenable number.

145928401 is a deficient number, since it is larger than the sum of its proper divisors (52371).

145928401 is an equidigital number, since it uses as much as digits as its factorization.

145928401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52370.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 145928401 is about 12080.0828225638. The cubic root of 145928401 is about 526.4776524014.

The spelling of 145928401 in words is "one hundred forty-five million, nine hundred twenty-eight thousand, four hundred one".