420112140 has 96 divisors (see below), whose sum is σ = 1351655424. Its totient is φ = 95504640.

The previous prime is 420112123. The next prime is 420112163. The reversal of 420112140 is 41211024.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77602 + ... + 82838.

It is an arithmetic number, because the mean of its divisors is an integer number (14079744).

Almost surely, 2^420112140 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 420112140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675827712).

420112140 is an abundant number, since it is smaller than the sum of its proper divisors (931543284).

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

420112140 is a wasteful number, since it uses less digits than its factorization.

420112140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5447 (or 5445 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 420112140 is about 20496.6372851744. The cubic root of 420112140 is about 748.9538837550.

Adding to 420112140 its reverse (41211024), we get a palindrome (461323164).

The spelling of 420112140 in words is "four hundred twenty million, one hundred twelve thousand, one hundred forty".