4220440042420 has 48 divisors (see below), whose sum is σ = 10131079956480. Its totient is φ = 1446718892544.

The previous prime is 4220440042387. The next prime is 4220440042433. The reversal of 4220440042420 is 242400440224.

It is a super-2 number, since 2×4220440042420² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2307924 + ... + 3710443.

It is an arithmetic number, because the mean of its divisors is an integer number (211064165760).

Almost surely, 2^{4220440042420} is an apocalyptic number.

It is an amenable number.

4220440042420 is an abundant number, since it is smaller than the sum of its proper divisors (5910639914060).

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

4220440042420 is a wasteful number, since it uses less digits than its factorization.

4220440042420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023392 (or 6023390 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 4220440042420 its reverse (242400440224), we get a palindrome (4462840482644).

The spelling of 4220440042420 in words is "four trillion, two hundred twenty billion, four hundred forty million, forty-two thousand, four hundred twenty".