642324153 has 16 divisors (see below), whose sum is σ = 888367040. Its totient is φ = 412521984.

The previous prime is 642324121. The next prime is 642324169. The reversal of 642324153 is 351423246.

It is not a de Polignac number, because 642324153 - 2⁵ = 642324121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 642324153.

It is not an unprimeable number, because it can be changed into a prime (642324113) 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, 24688 + ... + 43521.

It is an arithmetic number, because the mean of its divisors is an integer number (55522940).

Almost surely, 2^642324153 is an apocalyptic number.

It is an amenable number.

642324153 is a deficient number, since it is larger than the sum of its proper divisors (246042887).

642324153 is a wasteful number, since it uses less digits than its factorization.

642324153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68328.

The product of its digits is 17280, while the sum is 30.

The square root of 642324153 is about 25344.1147606303. The cubic root of 642324153 is about 862.8157899308.

Adding to 642324153 its reverse (351423246), we get a palindrome (993747399).

The spelling of 642324153 in words is "six hundred forty-two million, three hundred twenty-four thousand, one hundred fifty-three".