642624142142 has 32 divisors (see below), whose sum is σ = 1040213809152. Its totient is φ = 296614715904.

The previous prime is 642624142117. The next prime is 642624142207. The reversal of 642624142142 is 241241426246.

It is a super-4 number, since 4×642624142142⁴ (a number of 48 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 642624142096 and 642624142105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6025283 + ... + 6131009.

It is an arithmetic number, because the mean of its divisors is an integer number (32506681536).

Almost surely, 2^642624142142 is an apocalyptic number.

642624142142 is a deficient number, since it is larger than the sum of its proper divisors (397589667010).

642624142142 is a wasteful number, since it uses less digits than its factorization.

642624142142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109172.

The product of its digits is 147456, while the sum is 38.

Adding to 642624142142 its reverse (241241426246), we get a palindrome (883865568388).

The spelling of 642624142142 in words is "six hundred forty-two billion, six hundred twenty-four million, one hundred forty-two thousand, one hundred forty-two".