1002171401 has 8 divisors (see below), whose sum is σ = 1249460544. Its totient is φ = 780912720.

The previous prime is 1002171383. The next prime is 1002171407. The reversal of 1002171401 is 1041712001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1002171401 - 2⁶ = 1002171337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1002171401.

It is not an unprimeable number, because it can be changed into a prime (1002171407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6507530 + ... + 6507683.

It is an arithmetic number, because the mean of its divisors is an integer number (156182568).

Almost surely, 2^1002171401 is an apocalyptic number.

1002171401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1002171401 is a deficient number, since it is larger than the sum of its proper divisors (247289143).

1002171401 is a wasteful number, since it uses less digits than its factorization.

1002171401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13015231.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 1002171401 is about 31657.0908486551. The cubic root of 1002171401 is about 1000.7232770775.

Adding to 1002171401 its reverse (1041712001), we get a palindrome (2043883402).

The spelling of 1002171401 in words is "one billion, two million, one hundred seventy-one thousand, four hundred one".