42401242444 has 48 divisors (see below), whose sum is σ = 86541751296. Its totient is φ = 17963424000.

The previous prime is 42401242423. The next prime is 42401242447. The reversal of 42401242444 is 44424210424.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42401242447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198132 + ... + 352219.

It is an arithmetic number, because the mean of its divisors is an integer number (1802953152).

Almost surely, 2^42401242444 is an apocalyptic number.

42401242444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42401242444 is an abundant number, since it is smaller than the sum of its proper divisors (44140508852).

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

42401242444 is a wasteful number, since it uses less digits than its factorization.

42401242444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550486 (or 550484 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 42401242444 its reverse (44424210424), we get a palindrome (86825452868).

The spelling of 42401242444 in words is "forty-two billion, four hundred one million, two hundred forty-two thousand, four hundred forty-four".