42452304434021 has 4 divisors (see below), whose sum is σ = 43821733609344. Its totient is φ = 41082875258700.

The previous prime is 42452304433961. The next prime is 42452304434027. The reversal of 42452304434021 is 12043440325424.

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 42452304434021 - 2³⁰ = 42451230692197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42452304434027) 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, 684714587615 + ... + 684714587676.

It is an arithmetic number, because the mean of its divisors is an integer number (10955433402336).

Almost surely, 2^{42452304434021} is an apocalyptic number.

It is an amenable number.

42452304434021 is a deficient number, since it is larger than the sum of its proper divisors (1369429175323).

42452304434021 is a wasteful number, since it uses less digits than its factorization.

42452304434021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369429175322.

The product of its (nonzero) digits is 368640, while the sum is 38.

Adding to 42452304434021 its reverse (12043440325424), we get a palindrome (54495744759445).

The spelling of 42452304434021 in words is "forty-two trillion, four hundred fifty-two billion, three hundred four million, four hundred thirty-four thousand, twenty-one".