145394423 has 8 divisors (see below), whose sum is σ = 152143488. Its totient is φ = 138793824.

The previous prime is 145394419. The next prime is 145394437. The reversal of 145394423 is 324493541.

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 145394423 - 2² = 145394419 is a prime.

It is a super-2 number, since 2×145394423² = 42279076479005858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145391423) 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, 35111 + ... + 39032.

It is an arithmetic number, because the mean of its divisors is an integer number (19017936).

Almost surely, 2^145394423 is an apocalyptic number.

145394423 is a deficient number, since it is larger than the sum of its proper divisors (6749065).

145394423 is an equidigital number, since it uses as much as digits as its factorization.

145394423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74233.

The product of its digits is 51840, while the sum is 35.

The square root of 145394423 is about 12057.9609801989. The cubic root of 145394423 is about 525.8347090602.

The spelling of 145394423 in words is "one hundred forty-five million, three hundred ninety-four thousand, four hundred twenty-three".