2142860393 has 2 divisors, whose sum is σ = 2142860394. Its totient is φ = 2142860392.

The previous prime is 2142860371. The next prime is 2142860407. The reversal of 2142860393 is 3930682412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1309498969 + 833361424 = 36187^2 + 28868^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142860393 - 2¹² = 2142856297 is a prime.

It is a super-2 number, since 2×2142860393² = 9183701327776228898, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2142860893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071430196 + 1071430197.

It is an arithmetic number, because the mean of its divisors is an integer number (1071430197).

Almost surely, 2^2142860393 is an apocalyptic number.

It is an amenable number.

2142860393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142860393 is an equidigital number, since it uses as much as digits as its factorization.

2142860393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 2142860393 is about 46291.0400941694. The cubic root of 2142860393 is about 1289.2326411960.

The spelling of 2142860393 in words is "two billion, one hundred forty-two million, eight hundred sixty thousand, three hundred ninety-three".