100012401 has 10 divisors (see below), whose sum is σ = 149401362. Its totient is φ = 66674880.

The previous prime is 100012397. The next prime is 100012421. The reversal of 100012401 is 104210001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 99980001 + 32400 = 9999^2 + 180^2 .

It is not a de Polignac number, because 100012401 - 2² = 100012397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100012421) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 617280 + ... + 617441.

Almost surely, 2^100012401 is an apocalyptic number.

It is an amenable number.

100012401 is a deficient number, since it is larger than the sum of its proper divisors (49388961).

100012401 is an equidigital number, since it uses as much as digits as its factorization.

100012401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234733 (or 1234724 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 100012401 is about 10000.6200307781. The cubic root of 100012401 is about 464.1780693493.

Adding to 100012401 its reverse (104210001), we get a palindrome (204222402).

The spelling of 100012401 in words is "one hundred million, twelve thousand, four hundred one".