42444141022421 has 4 divisors (see below), whose sum is σ = 43163533243200. Its totient is φ = 41724748801644.

The previous prime is 42444141022399. The next prime is 42444141022469. The reversal of 42444141022421 is 12422014144424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42444141022421 - 2¹⁰ = 42444141021397 is a prime.

It is a super-2 number, since 2×42444141022421² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42444141022021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359696110301 + ... + 359696110418.

It is an arithmetic number, because the mean of its divisors is an integer number (10790883310800).

Almost surely, 2^{42444141022421} is an apocalyptic number.

It is an amenable number.

42444141022421 is a deficient number, since it is larger than the sum of its proper divisors (719392220779).

42444141022421 is an equidigital number, since it uses as much as digits as its factorization.

42444141022421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719392220778.

The product of its (nonzero) digits is 65536, while the sum is 35.

Adding to 42444141022421 its reverse (12422014144424), we get a palindrome (54866155166845).

The spelling of 42444141022421 in words is "forty-two trillion, four hundred forty-four billion, one hundred forty-one million, twenty-two thousand, four hundred twenty-one".