145572423 has 8 divisors (see below), whose sum is σ = 194710128. Its totient is φ = 96741504.

The previous prime is 145572419. The next prime is 145572457. The reversal of 145572423 is 324275541.

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

It is not a de Polignac number, because 145572423 - 2² = 145572419 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145572403) 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, 75586 + ... + 77487.

It is an arithmetic number, because the mean of its divisors is an integer number (24338766).

Almost surely, 2^145572423 is an apocalyptic number.

145572423 is a deficient number, since it is larger than the sum of its proper divisors (49137705).

145572423 is a wasteful number, since it uses less digits than its factorization.

145572423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153393.

The product of its digits is 33600, while the sum is 33.

The square root of 145572423 is about 12065.3397382751. The cubic root of 145572423 is about 526.0492069894.

The spelling of 145572423 in words is "one hundred forty-five million, five hundred seventy-two thousand, four hundred twenty-three".