2140157 has 2 divisors, whose sum is σ = 2140158. Its totient is φ = 2140156.

The previous prime is 2140139. The next prime is 2140163. The reversal of 2140157 is 7510412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1819801 + 320356 = 1349^2 + 566^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140157 - 2¹² = 2136061 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070078 + 1070079.

It is an arithmetic number, because the mean of its divisors is an integer number (1070079).

2^2140157 is an apocalyptic number.

It is an amenable number.

2140157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140157 is an equidigital number, since it uses as much as digits as its factorization.

2140157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 2140157 is about 1462.9275443439. The cubic root of 2140157 is about 128.8690255700.

Adding to 2140157 its reverse (7510412), we get a palindrome (9650569).

The spelling of 2140157 in words is "two million, one hundred forty thousand, one hundred fifty-seven".