642038962 has 4 divisors (see below), whose sum is σ = 963058446. Its totient is φ = 321019480.

The previous prime is 642038953. The next prime is 642038963. The reversal of 642038962 is 269830246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 619561881 + 22477081 = 24891^2 + 4741^2 .

It is not an unprimeable number, because it can be changed into a prime (642038963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160509739 + ... + 160509742.

Almost surely, 2^642038962 is an apocalyptic number.

642038962 is a deficient number, since it is larger than the sum of its proper divisors (321019484).

642038962 is a wasteful number, since it uses less digits than its factorization.

642038962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321019483.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 642038962 is about 25338.4877607169. The cubic root of 642038962 is about 862.6880747039.

The spelling of 642038962 in words is "six hundred forty-two million, thirty-eight thousand, nine hundred sixty-two".