1010042555 has 4 divisors (see below), whose sum is σ = 1212051072. Its totient is φ = 808034040.

The previous prime is 1010042543. The next prime is 1010042567. The reversal of 1010042555 is 5552400101.

It is a happy number.

1010042555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (1010042543) and next prime (1010042567).

It is not a de Polignac number, because 1010042555 - 2⁶ = 1010042491 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 1010042555.

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, 101004251 + ... + 101004260.

It is an arithmetic number, because the mean of its divisors is an integer number (303012768).

Almost surely, 2^1010042555 is an apocalyptic number.

1010042555 is a deficient number, since it is larger than the sum of its proper divisors (202008517).

1010042555 is an equidigital number, since it uses as much as digits as its factorization.

1010042555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202008516.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 1010042555 is about 31781.1666714738. The cubic root of 1010042555 is about 1003.3363745586.

Adding to 1010042555 its reverse (5552400101), we get a palindrome (6562442656).

The spelling of 1010042555 in words is "one billion, ten million, forty-two thousand, five hundred fifty-five".