42128890259 has 2 divisors, whose sum is σ = 42128890260. Its totient is φ = 42128890258.

The previous prime is 42128890201. The next prime is 42128890277. The reversal of 42128890259 is 95209882124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42128890259 - 2²⁰ = 42127841683 is a prime.

It is not a weakly prime, because it can be changed into another prime (42128893259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21064445129 + 21064445130.

It is an arithmetic number, because the mean of its divisors is an integer number (21064445130).

Almost surely, 2^42128890259 is an apocalyptic number.

42128890259 is a deficient number, since it is larger than the sum of its proper divisors (1).

42128890259 is an equidigital number, since it uses as much as digits as its factorization.

42128890259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 42128890259 in words is "forty-two billion, one hundred twenty-eight million, eight hundred ninety thousand, two hundred fifty-nine".