2142055397 has 2 divisors, whose sum is σ = 2142055398. Its totient is φ = 2142055396.

The previous prime is 2142055387. The next prime is 2142055423. The reversal of 2142055397 is 7935502412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1438002241 + 704053156 = 37921^2 + 26534^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142055397 - 2⁴ = 2142055381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2142055397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2142055327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071027698 + 1071027699.

It is an arithmetic number, because the mean of its divisors is an integer number (1071027699).

Almost surely, 2^2142055397 is an apocalyptic number.

It is an amenable number.

2142055397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142055397 is an equidigital number, since it uses as much as digits as its factorization.

2142055397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 2142055397 is about 46282.3443334497. The cubic root of 2142055397 is about 1289.0711814469.

The spelling of 2142055397 in words is "two billion, one hundred forty-two million, fifty-five thousand, three hundred ninety-seven".