642007030 has 32 divisors (see below), whose sum is σ = 1321714944. Its totient is φ = 219947616.

The previous prime is 642007007. The next prime is 642007049. The reversal of 642007030 is 30700246.

It is a junction number, because it is equal to n+sod(n) for n = 642006992 and 642007010.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 117949 + ... + 123271.

It is an arithmetic number, because the mean of its divisors is an integer number (41303592).

Almost surely, 2^642007030 is an apocalyptic number.

642007030 is an abundant number, since it is smaller than the sum of its proper divisors (679707914).

642007030 is a wasteful number, since it uses less digits than its factorization.

642007030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7060.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 642007030 is about 25337.8576442445. The cubic root of 642007030 is about 862.6737724502.

Adding to 642007030 its reverse (30700246), we get a palindrome (672707276).

The spelling of 642007030 in words is "six hundred forty-two million, seven thousand, thirty".