642033416 has 8 divisors (see below), whose sum is σ = 1203812670. Its totient is φ = 321016704.

The previous prime is 642033341. The next prime is 642033419. The reversal of 642033416 is 614330246.

It can be written as a sum of positive squares in only one way, i.e., 535737316 + 106296100 = 23146^2 + 10310^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (642033419) 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, 40127081 + ... + 40127096.

Almost surely, 2^642033416 is an apocalyptic number.

It is an amenable number.

642033416 is a deficient number, since it is larger than the sum of its proper divisors (561779254).

642033416 is a wasteful number, since it uses less digits than its factorization.

642033416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80254183 (or 80254179 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 642033416 is about 25338.3783222210. The cubic root of 642033416 is about 862.6855907000.

The spelling of 642033416 in words is "six hundred forty-two million, thirty-three thousand, four hundred sixteen".