642623103 has 48 divisors (see below), whose sum is σ = 1007004960. Its totient is φ = 393412608.

The previous prime is 642623083. The next prime is 642623131. The reversal of 642623103 is 301326246.

642623103 is a `hidden beast` number, since 6 + 426 + 231 + 0 + 3 = 666.

It is not a de Polignac number, because 642623103 - 2⁵ = 642623071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642623173) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2319801 + ... + 2320077.

It is an arithmetic number, because the mean of its divisors is an integer number (20979270).

Almost surely, 2^642623103 is an apocalyptic number.

642623103 is a deficient number, since it is larger than the sum of its proper divisors (364381857).

642623103 is a wasteful number, since it uses less digits than its factorization.

642623103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 642623103 is about 25350.0118934883. The cubic root of 642623103 is about 862.9496261841.

Adding to 642623103 its reverse (301326246), we get a palindrome (943949349).

The spelling of 642623103 in words is "six hundred forty-two million, six hundred twenty-three thousand, one hundred three".