642504710 has 16 divisors (see below), whose sum is σ = 1183404816. Its totient is φ = 251024928.

The previous prime is 642504697. The next prime is 642504713. The reversal of 642504710 is 17405246.

It is a super-3 number, since 3×642504710³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642504713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746669 + ... + 747528.

It is an arithmetic number, because the mean of its divisors is an integer number (73962801).

Almost surely, 2^642504710 is an apocalyptic number.

642504710 is a deficient number, since it is larger than the sum of its proper divisors (540900106).

642504710 is a wasteful number, since it uses less digits than its factorization.

642504710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494247.

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

The square root of 642504710 is about 25347.6766193669. The cubic root of 642504710 is about 862.8966280532.

Adding to 642504710 its reverse (17405246), we get a palindrome (659909956).

The spelling of 642504710 in words is "six hundred forty-two million, five hundred four thousand, seven hundred ten".