642266034 has 16 divisors (see below), whose sum is σ = 1287288288. Its totient is φ = 213629312.

The previous prime is 642266033. The next prime is 642266039. The reversal of 642266034 is 430662246.

It is a junction number, because it is equal to n+sod(n) for n = 642265986 and 642266004.

It is not an unprimeable number, because it can be changed into a prime (642266033) 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, 111807 + ... + 117410.

It is an arithmetic number, because the mean of its divisors is an integer number (80455518).

Almost surely, 2^642266034 is an apocalyptic number.

642266034 is an abundant number, since it is smaller than the sum of its proper divisors (645022254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642266034 is a wasteful number, since it uses less digits than its factorization.

642266034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229689.

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 642266034 is about 25342.9681371382. The cubic root of 642266034 is about 862.7897659452.

The spelling of 642266034 in words is "six hundred forty-two million, two hundred sixty-six thousand, thirty-four".