145723369 has 16 divisors (see below), whose sum is σ = 168050880. Its totient is φ = 124968960.

The previous prime is 145723339. The next prime is 145723379. The reversal of 145723369 is 963327541.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 145723369 - 2⁷ = 145723241 is a prime.

It is a super-2 number, since 2×145723369² = 42470600545420322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145723309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52357 + ... + 55069.

It is an arithmetic number, because the mean of its divisors is an integer number (10503180).

Almost surely, 2^145723369 is an apocalyptic number.

145723369 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

145723369 is a deficient number, since it is larger than the sum of its proper divisors (22327511).

145723369 is a wasteful number, since it uses less digits than its factorization.

145723369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000.

The product of its digits is 136080, while the sum is 40.

The square root of 145723369 is about 12071.5934739371. The cubic root of 145723369 is about 526.2309666762.

The spelling of 145723369 in words is "one hundred forty-five million, seven hundred twenty-three thousand, three hundred sixty-nine".