145647123 has 8 divisors (see below), whose sum is σ = 194754000. Its totient is φ = 96819168.

The previous prime is 145647121. The next prime is 145647137. The reversal of 145647123 is 321746541.

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

It is not a de Polignac number, because 145647123 - 2¹ = 145647121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145647121) 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 7 ways as a sum of consecutive naturals, for example, 68508 + ... + 70601.

It is an arithmetic number, because the mean of its divisors is an integer number (24344250).

Almost surely, 2^145647123 is an apocalyptic number.

145647123 is a deficient number, since it is larger than the sum of its proper divisors (49106877).

145647123 is a wasteful number, since it uses less digits than its factorization.

145647123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139461.

The product of its digits is 20160, while the sum is 33.

The square root of 145647123 is about 12068.4349855315. The cubic root of 145647123 is about 526.1391717308.

The spelling of 145647123 in words is "one hundred forty-five million, six hundred forty-seven thousand, one hundred twenty-three".