145971423 has 16 divisors (see below), whose sum is σ = 232889440. Its totient is φ = 89828352.

The previous prime is 145971421. The next prime is 145971431. The reversal of 145971423 is 324179541.

145971423 is a `hidden beast` number, since 145 + 97 + 1 + 423 = 666.

It is not a de Polignac number, because 145971423 - 2¹ = 145971421 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 (145971421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207586 + ... + 208287.

It is an arithmetic number, because the mean of its divisors is an integer number (14555590).

Almost surely, 2^145971423 is an apocalyptic number.

145971423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

145971423 is a deficient number, since it is larger than the sum of its proper divisors (86918017).

145971423 is a wasteful number, since it uses less digits than its factorization.

145971423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415895 (or 415889 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 145971423 is about 12081.8633910502. The cubic root of 145971423 is about 526.5293852967.

The spelling of 145971423 in words is "one hundred forty-five million, nine hundred seventy-one thousand, four hundred twenty-three".