42830722479421 has 2 divisors, whose sum is σ = 42830722479422. Its totient is φ = 42830722479420.

The previous prime is 42830722479407. The next prime is 42830722479491. The reversal of 42830722479421 is 12497422703824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33142530872025 + 9688191607396 = 5756955^2 + 3112586^2 .

It is a cyclic number.

It is not a de Polignac number, because 42830722479421 - 2¹⁵ = 42830722446653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42830722479491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21415361239710 + 21415361239711.

It is an arithmetic number, because the mean of its divisors is an integer number (21415361239711).

Almost surely, 2^{42830722479421} is an apocalyptic number.

It is an amenable number.

42830722479421 is a deficient number, since it is larger than the sum of its proper divisors (1).

42830722479421 is an equidigital number, since it uses as much as digits as its factorization.

42830722479421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10838016, while the sum is 55.

The spelling of 42830722479421 in words is "forty-two trillion, eight hundred thirty billion, seven hundred twenty-two million, four hundred seventy-nine thousand, four hundred twenty-one".