642023320246 has 32 divisors (see below), whose sum is σ = 1252869907968. Its totient is φ = 239263347840.

The previous prime is 642023320241. The next prime is 642023320321.

642023320246 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642023320241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90626515 + ... + 90633598.

It is an arithmetic number, because the mean of its divisors is an integer number (39152184624).

Almost surely, 2^642023320246 is an apocalyptic number.

642023320246 is a deficient number, since it is larger than the sum of its proper divisors (610846587722).

642023320246 is a wasteful number, since it uses less digits than its factorization.

642023320246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181260156.

The product of its (nonzero) digits is 82944, while the sum is 34.

It can be divided in two parts, 642023 and 320246, that added together give a palindrome (962269).

The spelling of 642023320246 in words is "six hundred forty-two billion, twenty-three million, three hundred twenty thousand, two hundred forty-six".