3240172145 has 16 divisors (see below), whose sum is σ = 4444875648. Its totient is φ = 2221226880.

The previous prime is 3240172129. The next prime is 3240172147. The reversal of 3240172145 is 5412710423.

It is not a de Polignac number, because 3240172145 - 2⁴ = 3240172129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3240172147) 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, 145610 + ... + 166380.

It is an arithmetic number, because the mean of its divisors is an integer number (277804728).

Almost surely, 2^3240172145 is an apocalyptic number.

3240172145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3240172145 is a deficient number, since it is larger than the sum of its proper divisors (1204703503).

3240172145 is a wasteful number, since it uses less digits than its factorization.

3240172145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25240.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 3240172145 is about 56922.5100026343. The cubic root of 3240172145 is about 1479.7534506822.

Adding to 3240172145 its reverse (5412710423), we get a palindrome (8652882568).

The spelling of 3240172145 in words is "three billion, two hundred forty million, one hundred seventy-two thousand, one hundred forty-five".