100402401 has 16 divisors (see below), whose sum is σ = 148436928. Its totient is φ = 59851200.

The previous prime is 100402369. The next prime is 100402409. The reversal of 100402401 is 104204001.

It is not a de Polignac number, because 100402401 - 2⁵ = 100402369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100402409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22926 + ... + 26951.

It is an arithmetic number, because the mean of its divisors is an integer number (9277308).

Almost surely, 2^100402401 is an apocalyptic number.

100402401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100402401 is a deficient number, since it is larger than the sum of its proper divisors (48034527).

100402401 is a wasteful number, since it uses less digits than its factorization.

100402401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49952.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 100402401 is about 10020.0998498019. The cubic root of 100402401 is about 464.7806434454.

Adding to 100402401 its reverse (104204001), we get a palindrome (204606402).

The spelling of 100402401 in words is "one hundred million, four hundred two thousand, four hundred one".