1540041235 has 4 divisors (see below), whose sum is σ = 1848049488. Its totient is φ = 1232032984.

The previous prime is 1540041229. The next prime is 1540041253. The reversal of 1540041235 is 5321400451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5321400451 = 23 ⋅231365237.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1540041235 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154004119 + ... + 154004128.

It is an arithmetic number, because the mean of its divisors is an integer number (462012372).

Almost surely, 2^1540041235 is an apocalyptic number.

1540041235 is a deficient number, since it is larger than the sum of its proper divisors (308008253).

1540041235 is an equidigital number, since it uses as much as digits as its factorization.

1540041235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308008252.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1540041235 is about 39243.3591197288. The cubic root of 1540041235 is about 1154.8106571676.

Adding to 1540041235 its reverse (5321400451), we get a palindrome (6861441686).

The spelling of 1540041235 in words is "one billion, five hundred forty million, forty-one thousand, two hundred thirty-five".