42402101322440 has 32 divisors (see below), whose sum is σ = 95407675391160. Its totient is φ = 16960316544000.

The previous prime is 42402101322397. The next prime is 42402101322467. The reversal of 42402101322440 is 4422310120424.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 39247293034756 + 3154808287684 = 6264766^2 + 1776178^2 .

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, 15062291 + ... + 17654370.

Almost surely, 2^{42402101322440} is an apocalyptic number.

42402101322440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42402101322440 is an abundant number, since it is smaller than the sum of its proper divisors (53005574068720).

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

42402101322440 is a wasteful number, since it uses less digits than its factorization.

42402101322440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32749073 (or 32749069 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 42402101322440 its reverse (4422310120424), we get a palindrome (46824411442864).

The spelling of 42402101322440 in words is "forty-two trillion, four hundred two billion, one hundred one million, three hundred twenty-two thousand, four hundred forty".