2141987 has 2 divisors, whose sum is σ = 2141988. Its totient is φ = 2141986.

The previous prime is 2141977. The next prime is 2142001. The reversal of 2141987 is 7891412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2141987 - 2⁸ = 2141731 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2141917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070993 + 1070994.

It is an arithmetic number, because the mean of its divisors is an integer number (1070994).

2^2141987 is an apocalyptic number.

2141987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141987 is an equidigital number, since it uses as much as digits as its factorization.

2141987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 32.

The square root of 2141987 is about 1463.5528688777. The cubic root of 2141987 is about 128.9057461052.

The spelling of 2141987 in words is "two million, one hundred forty-one thousand, nine hundred eighty-seven".