2542091 has 2 divisors, whose sum is σ = 2542092. Its totient is φ = 2542090.

The previous prime is 2542087. The next prime is 2542097. The reversal of 2542091 is 1902452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2542091 - 2² = 2542087 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2542097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271045 + 1271046.

It is an arithmetic number, because the mean of its divisors is an integer number (1271046).

2^2542091 is an apocalyptic number.

2542091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542091 is an equidigital number, since it uses as much as digits as its factorization.

2542091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2542091 is about 1594.3936151403. The cubic root of 2542091 is about 136.4783293788.

The spelling of 2542091 in words is "two million, five hundred forty-two thousand, ninety-one".