42103220389 has 2 divisors, whose sum is σ = 42103220390. Its totient is φ = 42103220388.

The previous prime is 42103220371. The next prime is 42103220429. The reversal of 42103220389 is 98302230124.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21126622500 + 20976597889 = 145350^2 + 144833^2 .

It is a cyclic number.

It is not a de Polignac number, because 42103220389 - 2⁷ = 42103220261 is a prime.

It is a super-2 number, since 2×42103220389² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42103220329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21051610194 + 21051610195.

It is an arithmetic number, because the mean of its divisors is an integer number (21051610195).

Almost surely, 2^42103220389 is an apocalyptic number.

It is an amenable number.

42103220389 is a deficient number, since it is larger than the sum of its proper divisors (1).

42103220389 is an equidigital number, since it uses as much as digits as its factorization.

42103220389 is an evil number, because the sum of its binary digits is even.

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

The spelling of 42103220389 in words is "forty-two billion, one hundred three million, two hundred twenty thousand, three hundred eighty-nine".