145923205 has 8 divisors (see below), whose sum is σ = 176715000. Its totient is φ = 115667136.

The previous prime is 145923181. The next prime is 145923241. The reversal of 145923205 is 502329541.

It can be written as a sum of positive squares in 4 ways, for example, as 4955076 + 140968129 = 2226^2 + 11873^2 .

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 145923205 - 2⁷ = 145923077 is a prime.

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, 133330 + ... + 134419.

It is an arithmetic number, because the mean of its divisors is an integer number (22089375).

Almost surely, 2^145923205 is an apocalyptic number.

It is an amenable number.

145923205 is a deficient number, since it is larger than the sum of its proper divisors (30791795).

145923205 is a wasteful number, since it uses less digits than its factorization.

145923205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267863.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 145923205 is about 12079.8677558987. The cubic root of 145923205 is about 526.4714036513.

The spelling of 145923205 in words is "one hundred forty-five million, nine hundred twenty-three thousand, two hundred five".