2142678533 has 2 divisors, whose sum is σ = 2142678534. Its totient is φ = 2142678532.

The previous prime is 2142678511. The next prime is 2142678569. The reversal of 2142678533 is 3358762412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2140172644 + 2505889 = 46262^2 + 1583^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142678533 - 2¹² = 2142674437 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2142678233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071339266 + 1071339267.

It is an arithmetic number, because the mean of its divisors is an integer number (1071339267).

Almost surely, 2^2142678533 is an apocalyptic number.

It is an amenable number.

2142678533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142678533 is an equidigital number, since it uses as much as digits as its factorization.

2142678533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 41.

The square root of 2142678533 is about 46289.0757414749. The cubic root of 2142678533 is about 1289.1961686876.

The spelling of 2142678533 in words is "two billion, one hundred forty-two million, six hundred seventy-eight thousand, five hundred thirty-three".