1040135541 has 4 divisors (see below), whose sum is σ = 1386847392. Its totient is φ = 693423692.

The previous prime is 1040135539. The next prime is 1040135549. The reversal of 1040135541 is 1455310401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1040135541 - 2¹ = 1040135539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040135549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173355921 + ... + 173355926.

It is an arithmetic number, because the mean of its divisors is an integer number (346711848).

Almost surely, 2^1040135541 is an apocalyptic number.

It is an amenable number.

1040135541 is a deficient number, since it is larger than the sum of its proper divisors (346711851).

1040135541 is an equidigital number, since it uses as much as digits as its factorization.

1040135541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346711850.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1040135541 is about 32251.1323987236. The cubic root of 1040135541 is about 1013.2034162155.

Adding to 1040135541 its reverse (1455310401), we get a palindrome (2495445942).

The spelling of 1040135541 in words is "one billion, forty million, one hundred thirty-five thousand, five hundred forty-one".