1001240055 has 32 divisors (see below), whose sum is σ = 1873670400. Its totient is φ = 505888416.

The previous prime is 1001240047. The next prime is 1001240057. The reversal of 1001240055 is 5500421001.

It is not a de Polignac number, because 1001240055 - 2³ = 1001240047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001240057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192609 + ... + 197738.

It is an arithmetic number, because the mean of its divisors is an integer number (58552200).

Almost surely, 2^1001240055 is an apocalyptic number.

1001240055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1001240055 is a deficient number, since it is larger than the sum of its proper divisors (872430345).

1001240055 is a wasteful number, since it uses less digits than its factorization.

1001240055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390380 (or 390374 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1001240055 is about 31642.3775181322. The cubic root of 1001240055 is about 1000.4131809247.

Adding to 1001240055 its reverse (5500421001), we get a palindrome (6501661056).

The spelling of 1001240055 in words is "one billion, one million, two hundred forty thousand, fifty-five".