42312213210409 has 2 divisors, whose sum is σ = 42312213210410. Its totient is φ = 42312213210408.

The previous prime is 42312213210353. The next prime is 42312213210439. The reversal of 42312213210409 is 90401231221324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39781339490025 + 2530873720384 = 6307245^2 + 1590872^2 .

It is a cyclic number.

It is not a de Polignac number, because 42312213210409 - 2⁴¹ = 40113189954857 is a prime.

It is not a weakly prime, because it can be changed into another prime (42312213210439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21156106605204 + 21156106605205.

It is an arithmetic number, because the mean of its divisors is an integer number (21156106605205).

Almost surely, 2^{42312213210409} is an apocalyptic number.

It is an amenable number.

42312213210409 is a deficient number, since it is larger than the sum of its proper divisors (1).

42312213210409 is an equidigital number, since it uses as much as digits as its factorization.

42312213210409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 42312213210409 in words is "forty-two trillion, three hundred twelve billion, two hundred thirteen million, two hundred ten thousand, four hundred nine".