145020005 has 8 divisors (see below), whose sum is σ = 187410552. Its totient is φ = 107091648.

The previous prime is 145019999. The next prime is 145020011. The reversal of 145020005 is 500020541.

It is an interprime number because it is at equal distance from previous prime (145019999) and next prime (145020011).

It can be written as a sum of positive squares in 4 ways, for example, as 996004 + 144024001 = 998^2 + 12001^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 145020005 - 2¹⁸ = 144757861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115474 + ... + 1115603.

It is an arithmetic number, because the mean of its divisors is an integer number (23426319).

Almost surely, 2^145020005 is an apocalyptic number.

It is an amenable number.

145020005 is a deficient number, since it is larger than the sum of its proper divisors (42390547).

145020005 is a wasteful number, since it uses less digits than its factorization.

145020005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231095.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 145020005 is about 12042.4252125558. The cubic root of 145020005 is about 525.3829466039.

Adding to 145020005 its reverse (500020541), we get a palindrome (645040546).

The spelling of 145020005 in words is "one hundred forty-five million, twenty thousand, five".