145021413 has 8 divisors (see below), whose sum is σ = 197858848. Its totient is φ = 94432464.

The previous prime is 145021403. The next prime is 145021421. The reversal of 145021413 is 314120541.

145021413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145021413 - 2⁵ = 145021381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145021413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145021403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561970 + ... + 562227.

It is an arithmetic number, because the mean of its divisors is an integer number (24732356).

Almost surely, 2^145021413 is an apocalyptic number.

It is an amenable number.

145021413 is a deficient number, since it is larger than the sum of its proper divisors (52837435).

145021413 is a wasteful number, since it uses less digits than its factorization.

145021413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124243.

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

The square root of 145021413 is about 12042.4836723991. The cubic root of 145021413 is about 525.3846469137.

Adding to 145021413 its reverse (314120541), we get a palindrome (459141954).

The spelling of 145021413 in words is "one hundred forty-five million, twenty-one thousand, four hundred thirteen".