642510455422 has 8 divisors (see below), whose sum is σ = 1051380745272. Its totient is φ = 292050207000.

The previous prime is 642510455399. The next prime is 642510455429. The reversal of 642510455422 is 224554015246.

642510455422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642510455429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14602510329 + ... + 14602510372.

It is an arithmetic number, because the mean of its divisors is an integer number (131422593159).

Almost surely, 2^642510455422 is an apocalyptic number.

642510455422 is a deficient number, since it is larger than the sum of its proper divisors (408870289850).

642510455422 is a wasteful number, since it uses less digits than its factorization.

642510455422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29205020714.

The product of its (nonzero) digits is 384000, while the sum is 40.

The spelling of 642510455422 in words is "six hundred forty-two billion, five hundred ten million, four hundred fifty-five thousand, four hundred twenty-two".