42404344240555 has 24 divisors (see below), whose sum is σ = 55935871114032. Its totient is φ = 30837212472000.

The previous prime is 42404344240543. The next prime is 42404344240567. The reversal of 42404344240555 is 55504244340424.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42404344240543) and next prime (42404344240567).

It is not a de Polignac number, because 42404344240555 - 2²⁵ = 42404310686123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5476500 + ... + 10714510.

It is an arithmetic number, because the mean of its divisors is an integer number (2330661296418).

Almost surely, 2^{42404344240555} is an apocalyptic number.

42404344240555 is a deficient number, since it is larger than the sum of its proper divisors (13531526873477).

42404344240555 is a wasteful number, since it uses less digits than its factorization.

42404344240555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5251419 (or 5251408 counting only the distinct ones).

The product of its (nonzero) digits is 6144000, while the sum is 46.

Adding to 42404344240555 its reverse (55504244340424), we get a palindrome (97908588580979).

The spelling of 42404344240555 in words is "forty-two trillion, four hundred four billion, three hundred forty-four million, two hundred forty thousand, five hundred fifty-five".