42457621221444 has 48 divisors (see below), whose sum is σ = 116387325311040. Its totient is φ = 11876257683840.

The previous prime is 42457621221437. The next prime is 42457621221479. The reversal of 42457621221444 is 44412212675424.

It is a happy number.

42457621221444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42457621221444² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42457621221393 and 42457621221402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12371100039 + ... + 12371103470.

It is an arithmetic number, because the mean of its divisors is an integer number (2424735943980).

Almost surely, 2^{42457621221444} is an apocalyptic number.

42457621221444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42457621221444 is an abundant number, since it is smaller than the sum of its proper divisors (73929704089596).

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

42457621221444 is a wasteful number, since it uses less digits than its factorization.

42457621221444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24742203540 (or 24742203538 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 48.

Adding to 42457621221444 its reverse (44412212675424), we get a palindrome (86869833896868).

The spelling of 42457621221444 in words is "forty-two trillion, four hundred fifty-seven billion, six hundred twenty-one million, two hundred twenty-one thousand, four hundred forty-four".