145920441 has 16 divisors (see below), whose sum is σ = 209571840. Its totient is φ = 90047760.

The previous prime is 145920427. The next prime is 145920443. The reversal of 145920441 is 144029541.

It is not a de Polignac number, because 145920441 - 2¹⁵ = 145887673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145920399 and 145920408.

It is not an unprimeable number, because it can be changed into a prime (145920443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31971 + ... + 36248.

It is an arithmetic number, because the mean of its divisors is an integer number (13098240).

Almost surely, 2^145920441 is an apocalyptic number.

It is an amenable number.

145920441 is a deficient number, since it is larger than the sum of its proper divisors (63651399).

145920441 is a wasteful number, since it uses less digits than its factorization.

145920441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68276.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 145920441 is about 12079.7533501310. The cubic root of 145920441 is about 526.4680795829.

Adding to 145920441 its reverse (144029541), we get a palindrome (289949982).

The spelling of 145920441 in words is "one hundred forty-five million, nine hundred twenty thousand, four hundred forty-one".