403240242 has 8 divisors (see below), whose sum is σ = 806480496. Its totient is φ = 134413412.

The previous prime is 403240241. The next prime is 403240291. The reversal of 403240242 is 242042304.

It is a sphenic number, since it is the product of 3 distinct primes.

403240242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (403240241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33603348 + ... + 33603359.

It is an arithmetic number, because the mean of its divisors is an integer number (100810062).

Almost surely, 2^403240242 is an apocalyptic number.

403240242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

403240242 is a wasteful number, since it uses less digits than its factorization.

403240242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67206712.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 403240242 is about 20080.8426616016. The cubic root of 403240242 is about 738.7904772528.

Adding to 403240242 its reverse (242042304), we get a palindrome (645282546).

The spelling of 403240242 in words is "four hundred three million, two hundred forty thousand, two hundred forty-two".