2128039 has 2 divisors, whose sum is σ = 2128040. Its totient is φ = 2128038.

The previous prime is 2128031. The next prime is 2128051. The reversal of 2128039 is 9308212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2128039 - 2³ = 2128031 is a prime.

2128039 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2128031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064019 + 1064020.

It is an arithmetic number, because the mean of its divisors is an integer number (1064020).

2^2128039 is an apocalyptic number.

2128039 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128039 is an equidigital number, since it uses as much as digits as its factorization.

2128039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2128039 is about 1458.7799697007. The cubic root of 2128039 is about 128.6253375931.

The spelling of 2128039 in words is "two million, one hundred twenty-eight thousand, thirty-nine".