420140031012 has 144 divisors (see below), whose sum is σ = 1187201014272. Its totient is φ = 124448797440.

The previous prime is 420140030993. The next prime is 420140031019. The reversal of 420140031012 is 210130041024.

420140031012 is a `hidden beast` number, since 420 + 140 + 0 + 3 + 101 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (420140031019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1185193 + ... + 1498319.

It is an arithmetic number, because the mean of its divisors is an integer number (8244451488).

Almost surely, 2^420140031012 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 420140031012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593600507136).

420140031012 is an abundant number, since it is smaller than the sum of its proper divisors (767060983260).

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

420140031012 is a wasteful number, since it uses less digits than its factorization.

420140031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313258 (or 313253 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 420140031012 its reverse (210130041024), we get a palindrome (630270072036).

The spelling of 420140031012 in words is "four hundred twenty billion, one hundred forty million, thirty-one thousand, twelve".