2141749 has 2 divisors, whose sum is σ = 2141750. Its totient is φ = 2141748.

The previous prime is 2141731. The next prime is 2141753. The reversal of 2141749 is 9471412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1512900 + 628849 = 1230^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141749 - 2¹⁷ = 2010677 is a prime.

It is a Chen prime.

2141749 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2141149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070874 + 1070875.

It is an arithmetic number, because the mean of its divisors is an integer number (1070875).

2^2141749 is an apocalyptic number.

It is an amenable number.

2141749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141749 is an equidigital number, since it uses as much as digits as its factorization.

2141749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 2141749 is about 1463.4715576327. The cubic root of 2141749 is about 128.9009716125.

The spelling of 2141749 in words is "two million, one hundred forty-one thousand, seven hundred forty-nine".