240420040220 has 48 divisors (see below), whose sum is σ = 519105234816. Its totient is φ = 93476160000.

The previous prime is 240420040207. The next prime is 240420040297. The reversal of 240420040220 is 22040024042.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 240420040192 and 240420040201.

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, 318731 + ... + 763170.

It is an arithmetic number, because the mean of its divisors is an integer number (10814692392).

Almost surely, 2^240420040220 is an apocalyptic number.

240420040220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240420040220 is an abundant number, since it is smaller than the sum of its proper divisors (278685194596).

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

240420040220 is a wasteful number, since it uses less digits than its factorization.

240420040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082222 (or 1082220 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 240420040220 its reverse (22040024042), we get a palindrome (262460064262).

The spelling of 240420040220 in words is "two hundred forty billion, four hundred twenty million, forty thousand, two hundred twenty".