642026106231 has 8 divisors (see below), whose sum is σ = 906389797104. Its totient is φ = 402839909760.

The previous prime is 642026106203. The next prime is 642026106263. The reversal of 642026106231 is 132601620246.

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

It is not a de Polignac number, because 642026106231 - 2⁷ = 642026106103 is a prime.

It is a super-2 number, since 2×642026106231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 642026106192 and 642026106201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642026106031) 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, 6294373540 + ... + 6294373641.

It is an arithmetic number, because the mean of its divisors is an integer number (113298724638).

Almost surely, 2^642026106231 is an apocalyptic number.

642026106231 is a deficient number, since it is larger than the sum of its proper divisors (264363690873).

642026106231 is a wasteful number, since it uses less digits than its factorization.

642026106231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12588747201.

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 642026106231 its reverse (132601620246), we get a palindrome (774627726477).

The spelling of 642026106231 in words is "six hundred forty-two billion, twenty-six million, one hundred six thousand, two hundred thirty-one".