1535140241 has 2 divisors, whose sum is σ = 1535140242. Its totient is φ = 1535140240.

The previous prime is 1535140237. The next prime is 1535140253. The reversal of 1535140241 is 1420415351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 777294400 + 757845841 = 27880^2 + 27529^2 .

It is a cyclic number.

It is not a de Polignac number, because 1535140241 - 2² = 1535140237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1535140241.

It is not a weakly prime, because it can be changed into another prime (1532140241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767570120 + 767570121.

It is an arithmetic number, because the mean of its divisors is an integer number (767570121).

Almost surely, 2^1535140241 is an apocalyptic number.

It is an amenable number.

1535140241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1535140241 is an equidigital number, since it uses as much as digits as its factorization.

1535140241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1535140241 is about 39180.8657510270. The cubic root of 1535140241 is about 1153.5843405382.

Adding to 1535140241 its reverse (1420415351), we get a palindrome (2955555592).

The spelling of 1535140241 in words is "one billion, five hundred thirty-five million, one hundred forty thousand, two hundred forty-one".