420100140 has 24 divisors (see below), whose sum is σ = 1176280560. Its totient is φ = 112026688.

The previous prime is 420100103. The next prime is 420100159. The reversal of 420100140 is 41001024.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3500775 + ... + 3500894.

It is an arithmetic number, because the mean of its divisors is an integer number (49011690).

Almost surely, 2^420100140 is an apocalyptic number.

It is an amenable number.

420100140 is an abundant number, since it is smaller than the sum of its proper divisors (756180420).

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

420100140 is a wasteful number, since it uses less digits than its factorization.

420100140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001681 (or 7001679 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 420100140 is about 20496.3445521390. The cubic root of 420100140 is about 748.9467526970.

Adding to 420100140 its reverse (41001024), we get a palindrome (461101164).

The spelling of 420100140 in words is "four hundred twenty million, one hundred thousand, one hundred forty".