102642001 has 24 divisors (see below), whose sum is σ = 129850560. Its totient is φ = 79416480.

The previous prime is 102641999. The next prime is 102642017. The reversal of 102642001 is 100246201.

It is not a de Polignac number, because 102642001 - 2¹ = 102641999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102642101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151275 + ... + 151951.

It is an arithmetic number, because the mean of its divisors is an integer number (5410440).

Almost surely, 2^102642001 is an apocalyptic number.

102642001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102642001 is a deficient number, since it is larger than the sum of its proper divisors (27208559).

102642001 is a wasteful number, since it uses less digits than its factorization.

102642001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 102642001 is about 10131.2388679766. The cubic root of 102642001 is about 468.2110977567.

Adding to 102642001 its reverse (100246201), we get a palindrome (202888202).

The spelling of 102642001 in words is "one hundred two million, six hundred forty-two thousand, one".