42897221443 has 8 divisors (see below), whose sum is σ = 46205086400. Its totient is φ = 39694368168.

The previous prime is 42897221429. The next prime is 42897221453. The reversal of 42897221443 is 34412279824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42897221443 - 2¹⁷ = 42897090371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42897221393 and 42897221402.

It is not an unprimeable number, because it can be changed into a prime (42897221453) 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 7 ways as a sum of consecutive naturals, for example, 26252073 + ... + 26253706.

It is an arithmetic number, because the mean of its divisors is an integer number (5775635800).

Almost surely, 2^42897221443 is an apocalyptic number.

42897221443 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42897221443 is a deficient number, since it is larger than the sum of its proper divisors (3307864957).

42897221443 is a wasteful number, since it uses less digits than its factorization.

42897221443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52505841.

The product of its digits is 774144, while the sum is 46.

The spelling of 42897221443 in words is "forty-two billion, eight hundred ninety-seven million, two hundred twenty-one thousand, four hundred forty-three".