242140440420 has 48 divisors (see below), whose sum is σ = 753325816320. Its totient is φ = 64570783968.

The previous prime is 242140440413. The next prime is 242140440431. The reversal of 242140440420 is 24044041242.

242140440420 is a `hidden beast` number, since 2 + 4 + 214 + 0 + 440 + 4 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 224203572 + ... + 224204651.

It is an arithmetic number, because the mean of its divisors is an integer number (15694287840).

Almost surely, 2^242140440420 is an apocalyptic number.

242140440420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242140440420 is an abundant number, since it is smaller than the sum of its proper divisors (511185375900).

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

242140440420 is a wasteful number, since it uses less digits than its factorization.

242140440420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448408241 (or 448408233 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 242140440420 its reverse (24044041242), we get a palindrome (266184481662).

The spelling of 242140440420 in words is "two hundred forty-two billion, one hundred forty million, four hundred forty thousand, four hundred twenty".