2134861 has 2 divisors, whose sum is σ = 2134862. Its totient is φ = 2134860.

The previous prime is 2134849. The next prime is 2134879. The reversal of 2134861 is 1684312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1464100 + 670761 = 1210^2 + 819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2134861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2134801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067430 + 1067431.

It is an arithmetic number, because the mean of its divisors is an integer number (1067431).

2^2134861 is an apocalyptic number.

It is an amenable number.

2134861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2134861 is an equidigital number, since it uses as much as digits as its factorization.

2134861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 2134861 is about 1461.1163540252. The cubic root of 2134861 is about 128.7626386562.

The spelling of 2134861 in words is "two million, one hundred thirty-four thousand, eight hundred sixty-one".