140120423212 has 144 divisors (see below), whose sum is σ = 334491462144. Its totient is φ = 49721817600.

The previous prime is 140120423189. The next prime is 140120423221. The reversal of 140120423212 is 212324021041.

It is a super-2 number, since 2×140120423212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5017873 + ... + 5045719.

It is an arithmetic number, because the mean of its divisors is an integer number (2322857376).

Almost surely, 2^140120423212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140120423212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167245731072).

140120423212 is an abundant number, since it is smaller than the sum of its proper divisors (194371038932).

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

140120423212 is a wasteful number, since it uses less digits than its factorization.

140120423212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27948 (or 27915 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 140120423212 its reverse (212324021041), we get a palindrome (352444444253).

The spelling of 140120423212 in words is "one hundred forty billion, one hundred twenty million, four hundred twenty-three thousand, two hundred twelve".