42231232113421 has 4 divisors (see below), whose sum is σ = 45479788429852. Its totient is φ = 38982675796992.

The previous prime is 42231232113403. The next prime is 42231232113461. The reversal of 42231232113421 is 12431123213224.

42231232113421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5497196052100 + 36734036061321 = 2344610^2 + 6060861^2 .

It is a cyclic number.

It is not a de Polignac number, because 42231232113421 - 2¹¹ = 42231232111373 is a prime.

It is a super-2 number, since 2×42231232113421² (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 (42231232113461) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1624278158196 + ... + 1624278158221.

It is an arithmetic number, because the mean of its divisors is an integer number (11369947107463).

Almost surely, 2^{42231232113421} is an apocalyptic number.

It is an amenable number.

42231232113421 is a deficient number, since it is larger than the sum of its proper divisors (3248556316431).

42231232113421 is a wasteful number, since it uses less digits than its factorization.

42231232113421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248556316430.

The product of its digits is 13824, while the sum is 31.

Adding to 42231232113421 its reverse (12431123213224), we get a palindrome (54662355326645).

The spelling of 42231232113421 in words is "forty-two trillion, two hundred thirty-one billion, two hundred thirty-two million, one hundred thirteen thousand, four hundred twenty-one".