1042501022155 has 4 divisors (see below), whose sum is σ = 1251001226592. Its totient is φ = 834000817720.

The previous prime is 1042501022119. The next prime is 1042501022179. The reversal of 1042501022155 is 5512201052401.

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

It is not a de Polignac number, because 1042501022155 - 2⁹ = 1042501021643 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, 104250102211 + ... + 104250102220.

It is an arithmetic number, because the mean of its divisors is an integer number (312750306648).

Almost surely, 2^{1042501022155} is an apocalyptic number.

1042501022155 is a deficient number, since it is larger than the sum of its proper divisors (208500204437).

1042501022155 is an equidigital number, since it uses as much as digits as its factorization.

1042501022155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208500204436.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 1042501022155 its reverse (5512201052401), we get a palindrome (6554702074556).

The spelling of 1042501022155 in words is "one trillion, forty-two billion, five hundred one million, twenty-two thousand, one hundred fifty-five".