42402331444 has 72 divisors (see below), whose sum is σ = 84984863040. Its totient is φ = 18356870400.

The previous prime is 42402331427. The next prime is 42402331501. The reversal of 42402331444 is 44413320424.

It is a super-2 number, since 2×42402331444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 5605737 + ... + 5613295.

It is an arithmetic number, because the mean of its divisors is an integer number (1180345320).

Almost surely, 2^42402331444 is an apocalyptic number.

42402331444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42402331444 is an abundant number, since it is smaller than the sum of its proper divisors (42582531596).

42402331444 is a wasteful number, since it uses less digits than its factorization.

42402331444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7861 (or 7836 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 42402331444 its reverse (44413320424), we get a palindrome (86815651868).

The spelling of 42402331444 in words is "forty-two billion, four hundred two million, three hundred thirty-one thousand, four hundred forty-four".