642032033 has 2 divisors, whose sum is σ = 642032034. Its totient is φ = 642032032.

The previous prime is 642032023. The next prime is 642032087. The reversal of 642032033 is 330230246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 621853969 + 20178064 = 24937^2 + 4492^2 .

It is a cyclic number.

It is not a de Polignac number, because 642032033 - 2⁶ = 642031969 is a prime.

It is a super-2 number, since 2×642032033² = 824410262796226178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (642032023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321016016 + 321016017.

It is an arithmetic number, because the mean of its divisors is an integer number (321016017).

Almost surely, 2^642032033 is an apocalyptic number.

It is an amenable number.

642032033 is a deficient number, since it is larger than the sum of its proper divisors (1).

642032033 is an equidigital number, since it uses as much as digits as its factorization.

642032033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 642032033 is about 25338.3510315885. The cubic root of 642032033 is about 862.6849712644.

Adding to 642032033 its reverse (330230246), we get a palindrome (972262279).

The spelling of 642032033 in words is "six hundred forty-two million, thirty-two thousand, thirty-three".