642014642 has 16 divisors (see below), whose sum is σ = 984327552. Its totient is φ = 313916880.

The previous prime is 642014641. The next prime is 642014647. The reversal of 642014642 is 246410246.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (642014641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161693 + ... + 165615.

It is an arithmetic number, because the mean of its divisors is an integer number (61520472).

Almost surely, 2^642014642 is an apocalyptic number.

642014642 is a deficient number, since it is larger than the sum of its proper divisors (342312910).

642014642 is a wasteful number, since it uses less digits than its factorization.

642014642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5713.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 642014642 is about 25338.0078538152. The cubic root of 642014642 is about 862.6771818868.

Adding to 642014642 its reverse (246410246), we get a palindrome (888424888).

The spelling of 642014642 in words is "six hundred forty-two million, fourteen thousand, six hundred forty-two".