1540141 has 2 divisors, whose sum is σ = 1540142. Its totient is φ = 1540140.

The previous prime is 1540109. The next prime is 1540151. The reversal of 1540141 is 1410451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1334025 + 206116 = 1155^2 + 454^2 .

It is a cyclic number.

It is not a de Polignac number, because 1540141 - 2⁵ = 1540109 is a prime.

1540141 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1540151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770070 + 770071.

It is an arithmetic number, because the mean of its divisors is an integer number (770071).

2^1540141 is an apocalyptic number.

It is an amenable number.

1540141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540141 is an equidigital number, since it uses as much as digits as its factorization.

1540141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1540141 is about 1241.0241738177. The cubic root of 1540141 is about 115.4835593123.

Adding to 1540141 its reverse (1410451), we get a palindrome (2950592).

It can be divided in two parts, 1540 and 141, that added together give a square (1681 = 41²).

The spelling of 1540141 in words is "one million, five hundred forty thousand, one hundred forty-one".