1542091 has 2 divisors, whose sum is σ = 1542092. Its totient is φ = 1542090.

The previous prime is 1542089. The next prime is 1542119. The reversal of 1542091 is 1902451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1542091 - 2¹ = 1542089 is a prime.

Together with 1542089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1542031) 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, 771045 + 771046.

It is an arithmetic number, because the mean of its divisors is an integer number (771046).

2^1542091 is an apocalyptic number.

1542091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542091 is an equidigital number, since it uses as much as digits as its factorization.

1542091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1542091 is about 1241.8095667211. The cubic root of 1542091 is about 115.5322773554.

Adding to 1542091 its product of nonzero digits (360), we get a palindrome (1542451).

The spelling of 1542091 in words is "one million, five hundred forty-two thousand, ninety-one".