2042400042420 has 24 divisors (see below), whose sum is σ = 5718720118944. Its totient is φ = 544640011296.

The previous prime is 2042400042391. The next prime is 2042400042433. The reversal of 2042400042420 is 242400042402.

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, 17020000294 + ... + 17020000413.

It is an arithmetic number, because the mean of its divisors is an integer number (238280004956).

Almost surely, 2^{2042400042420} is an apocalyptic number.

2042400042420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2042400042420 is an abundant number, since it is smaller than the sum of its proper divisors (3676320076524).

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

2042400042420 is a wasteful number, since it uses less digits than its factorization.

2042400042420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34040000719 (or 34040000717 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 2042400042420 its reverse (242400042402), we get a palindrome (2284800084822).

The spelling of 2042400042420 in words is "two trillion, forty-two billion, four hundred million, forty-two thousand, four hundred twenty".