42424421431433 has 4 divisors (see below), whose sum is σ = 44919975633300. Its totient is φ = 39928867229568.

The previous prime is 42424421431409. The next prime is 42424421431493. The reversal of 42424421431433 is 33413412442424.

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 39916151033929 + 2508270397504 = 6317923^2 + 1583752^2 .

It is a cyclic number.

It is not a de Polignac number, because 42424421431433 - 2⁶ = 42424421431369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42424421431493) 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, 1247777100908 + ... + 1247777100941.

It is an arithmetic number, because the mean of its divisors is an integer number (11229993908325).

Almost surely, 2^{42424421431433} is an apocalyptic number.

It is an amenable number.

42424421431433 is a deficient number, since it is larger than the sum of its proper divisors (2495554201867).

42424421431433 is a wasteful number, since it uses less digits than its factorization.

42424421431433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495554201866.

The product of its digits is 884736, while the sum is 41.

Adding to 42424421431433 its reverse (33413412442424), we get a palindrome (75837833873857).

The spelling of 42424421431433 in words is "forty-two trillion, four hundred twenty-four billion, four hundred twenty-one million, four hundred thirty-one thousand, four hundred thirty-three".