642612023142 has 16 divisors (see below), whose sum is σ = 1304406495552. Its totient is φ = 211006932840.

The previous prime is 642612023099. The next prime is 642612023159. The reversal of 642612023142 is 241320216246.

It is a super-3 number, since 3×642612023142³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799268284 + ... + 799269087.

It is an arithmetic number, because the mean of its divisors is an integer number (81525405972).

Almost surely, 2^642612023142 is an apocalyptic number.

642612023142 is an abundant number, since it is smaller than the sum of its proper divisors (661794472410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642612023142 is a wasteful number, since it uses less digits than its factorization.

642612023142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598537443.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 642612023142 its reverse (241320216246), we get a palindrome (883932239388).

The spelling of 642612023142 in words is "six hundred forty-two billion, six hundred twelve million, twenty-three thousand, one hundred forty-two".