145972423 has 8 divisors (see below), whose sum is σ = 149876496. Its totient is φ = 142084800.

The previous prime is 145972381. The next prime is 145972439. The reversal of 145972423 is 324279541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145972423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145972483) 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, 15040 + ... + 22762.

It is an arithmetic number, because the mean of its divisors is an integer number (18734562).

Almost surely, 2^145972423 is an apocalyptic number.

145972423 is a deficient number, since it is larger than the sum of its proper divisors (3904073).

145972423 is an equidigital number, since it uses as much as digits as its factorization.

145972423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8225.

The product of its digits is 60480, while the sum is 37.

The square root of 145972423 is about 12081.9047753241. The cubic root of 145972423 is about 526.5305876512.

It can be divided in two parts, 14597 and 2423, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 145972423 in words is "one hundred forty-five million, nine hundred seventy-two thousand, four hundred twenty-three".