424640145 has 32 divisors (see below), whose sum is σ = 710664192. Its totient is φ = 216108992.

The previous prime is 424640141. The next prime is 424640149. The reversal of 424640145 is 541046424.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (424640141) and next prime (424640149).

It is a cyclic number.

It is not a de Polignac number, because 424640145 - 2² = 424640141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (424640141) 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 31 ways as a sum of consecutive naturals, for example, 172312 + ... + 174758.

It is an arithmetic number, because the mean of its divisors is an integer number (22208256).

Almost surely, 2^424640145 is an apocalyptic number.

It is an amenable number.

424640145 is a deficient number, since it is larger than the sum of its proper divisors (286024047).

424640145 is a wasteful number, since it uses less digits than its factorization.

424640145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 424640145 is about 20606.7985140827. The cubic root of 424640145 is about 751.6350373912.

Adding to 424640145 its reverse (541046424), we get a palindrome (965686569).

The spelling of 424640145 in words is "four hundred twenty-four million, six hundred forty thousand, one hundred forty-five".