1240132541 has 16 divisors (see below), whose sum is σ = 1338665328. Its totient is φ = 1144627200.

The previous prime is 1240132499. The next prime is 1240132559. The reversal of 1240132541 is 1452310421.

It can be written as a sum of positive squares in 8 ways, for example, as 89226916 + 1150905625 = 9446^2 + 33925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240132541 - 2⁶ = 1240132477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240132571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221861 + ... + 227381.

It is an arithmetic number, because the mean of its divisors is an integer number (83666583).

Almost surely, 2^1240132541 is an apocalyptic number.

It is an amenable number.

1240132541 is a deficient number, since it is larger than the sum of its proper divisors (98532787).

1240132541 is a wasteful number, since it uses less digits than its factorization.

1240132541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5792.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1240132541 is about 35215.5156287680. The cubic root of 1240132541 is about 1074.3753475042.

Adding to 1240132541 its reverse (1452310421), we get a palindrome (2692442962).

The spelling of 1240132541 in words is "one billion, two hundred forty million, one hundred thirty-two thousand, five hundred forty-one".