242403203440 has 40 divisors (see below), whose sum is σ = 564117831648. Its totient is φ = 96870032640.

The previous prime is 242403203381. The next prime is 242403203453. The reversal of 242403203440 is 44302304242.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 242403203399 and 242403203408.

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, 1340191 + ... + 1510270.

Almost surely, 2^242403203440 is an apocalyptic number.

242403203440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242403203440 is an abundant number, since it is smaller than the sum of its proper divisors (321714628208).

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

242403203440 is a wasteful number, since it uses less digits than its factorization.

242403203440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851537 (or 2851531 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 242403203440 its reverse (44302304242), we get a palindrome (286705507682).

The spelling of 242403203440 in words is "two hundred forty-two billion, four hundred three million, two hundred three thousand, four hundred forty".