2122427878 has 4 divisors (see below), whose sum is σ = 3183641820. Its totient is φ = 1061213938.

The previous prime is 2122427869. The next prime is 2122427887. The reversal of 2122427878 is 8787242212.

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

It is an interprime number because it is at equal distance from previous prime (2122427869) and next prime (2122427887).

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, 530606968 + ... + 530606971.

It is an arithmetic number, because the mean of its divisors is an integer number (795910455).

Almost surely, 2^2122427878 is an apocalyptic number.

2122427878 is a deficient number, since it is larger than the sum of its proper divisors (1061213942).

2122427878 is a wasteful number, since it uses less digits than its factorization.

2122427878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061213941.

The product of its digits is 200704, while the sum is 43.

The square root of 2122427878 is about 46069.8152590175. The cubic root of 2122427878 is about 1285.1218682583.

The spelling of 2122427878 in words is "two billion, one hundred twenty-two million, four hundred twenty-seven thousand, eight hundred seventy-eight".