1042540232155 has 4 divisors (see below), whose sum is σ = 1251048278592. Its totient is φ = 834032185720.

The previous prime is 1042540232113. The next prime is 1042540232179. The reversal of 1042540232155 is 5512320452401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1042540232155 - 2¹⁵ = 1042540199387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1042540232155.

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, 104254023211 + ... + 104254023220.

It is an arithmetic number, because the mean of its divisors is an integer number (312762069648).

Almost surely, 2^{1042540232155} is an apocalyptic number.

1042540232155 is a deficient number, since it is larger than the sum of its proper divisors (208508046437).

1042540232155 is an equidigital number, since it uses as much as digits as its factorization.

1042540232155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208508046436.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 1042540232155 its reverse (5512320452401), we get a palindrome (6554860684556).

The spelling of 1042540232155 in words is "one trillion, forty-two billion, five hundred forty million, two hundred thirty-two thousand, one hundred fifty-five".