4272345 has 80 divisors (see below), whose sum is σ = 9618048. Its totient is φ = 1762560.

The previous prime is 4272343. The next prime is 4272349. The reversal of 4272345 is 5432724.

4272345 is a `hidden beast` number, since 427 + 234 + 5 = 666.

It is not a de Polignac number, because 4272345 - 2¹ = 4272343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 4 + 2⁷ + 7⁵ + 2¹¹ + 3¹⁰ + 4¹¹ + 5 .

It is not an unprimeable number, because it can be changed into a prime (4272341) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 31117 + ... + 31253.

Almost surely, 2^4272345 is an apocalyptic number.

4272345 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4272345 is an abundant number, since it is smaller than the sum of its proper divisors (5345703).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4272345 is a wasteful number, since it uses less digits than its factorization.

4272345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 163 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 4272345 is about 2066.9651666151. The cubic root of 4272345 is about 162.2639729246.

It can be divided in two parts, 427 and 2345, that added together give a palindrome (2772).

The spelling of 4272345 in words is "four million, two hundred seventy-two thousand, three hundred forty-five".