642602141 has 2 divisors, whose sum is σ = 642602142. Its totient is φ = 642602140.

The previous prime is 642602111. The next prime is 642602171. The reversal of 642602141 is 141206246.

642602141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (642602111) and next prime (642602171).

It can be written as a sum of positive squares in only one way, i.e., 368832025 + 273770116 = 19205^2 + 16546^2 .

It is a cyclic number.

It is not a de Polignac number, because 642602141 - 2²² = 638407837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 642602141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642602101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321301070 + 321301071.

It is an arithmetic number, because the mean of its divisors is an integer number (321301071).

Almost surely, 2^642602141 is an apocalyptic number.

It is an amenable number.

642602141 is a deficient number, since it is larger than the sum of its proper divisors (1).

642602141 is an equidigital number, since it uses as much as digits as its factorization.

642602141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 642602141 is about 25349.5984386341. The cubic root of 642602141 is about 862.9402431068.

Adding to 642602141 its reverse (141206246), we get a palindrome (783808387).

The spelling of 642602141 in words is "six hundred forty-two million, six hundred two thousand, one hundred forty-one".