42042222440 has 32 divisors (see below), whose sum is σ = 96379816680. Its totient is φ = 16499588352.

The previous prime is 42042222433. The next prime is 42042222463. The reversal of 42042222440 is 4422224024.

It can be written as a sum of positive squares in 4 ways, for example, as 42042221764 + 676 = 205042^2 + 26^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9913499 + ... + 9917738.

Almost surely, 2^42042222440 is an apocalyptic number.

42042222440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42042222440 is an abundant number, since it is smaller than the sum of its proper divisors (54337594240).

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

42042222440 is a wasteful number, since it uses less digits than its factorization.

42042222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19831301 (or 19831297 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 42042222440 its reverse (4422224024), we get a palindrome (46464446464).

The spelling of 42042222440 in words is "forty-two billion, forty-two million, two hundred twenty-two thousand, four hundred forty".