2120078 has 4 divisors (see below), whose sum is σ = 3180120. Its totient is φ = 1060038.

The previous prime is 2120057. The next prime is 2120093. The reversal of 2120078 is 8700212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530018 + ... + 530021.

It is an arithmetic number, because the mean of its divisors is an integer number (795030).

2^2120078 is an apocalyptic number.

2120078 is a deficient number, since it is larger than the sum of its proper divisors (1060042).

2120078 is a wasteful number, since it uses less digits than its factorization.

2120078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060041.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 2120078 is about 1456.0487629197. The cubic root of 2120078 is about 128.4647412436.

The spelling of 2120078 in words is "two million, one hundred twenty thousand, seventy-eight".