100401047 has 2 divisors, whose sum is σ = 100401048. Its totient is φ = 100401046.

The previous prime is 100401043. The next prime is 100401053. The reversal of 100401047 is 740104001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100401047 - 2² = 100401043 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100401043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50200523 + 50200524.

It is an arithmetic number, because the mean of its divisors is an integer number (50200524).

Almost surely, 2^100401047 is an apocalyptic number.

100401047 is a deficient number, since it is larger than the sum of its proper divisors (1).

100401047 is an equidigital number, since it uses as much as digits as its factorization.

100401047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 100401047 is about 10020.0322853771. The cubic root of 100401047 is about 464.7785541334.

Adding to 100401047 its reverse (740104001), we get a palindrome (840505048).

The spelling of 100401047 in words is "one hundred million, four hundred one thousand, forty-seven".