420200242040 has 32 divisors (see below), whose sum is σ = 945802386000. Its totient is φ = 168017547264.

The previous prime is 420200242039. The next prime is 420200242093. The reversal of 420200242040 is 40242002024.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1845770 + ... + 2060889.

Almost surely, 2^420200242040 is an apocalyptic number.

420200242040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420200242040 is an abundant number, since it is smaller than the sum of its proper divisors (525602143960).

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

420200242040 is a wasteful number, since it uses less digits than its factorization.

420200242040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909359 (or 3909355 counting only the distinct ones).

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

Adding to 420200242040 its reverse (40242002024), we get a palindrome (460442244064).

The spelling of 420200242040 in words is "four hundred twenty billion, two hundred million, two hundred forty-two thousand, forty".