100742401 has 2 divisors, whose sum is σ = 100742402. Its totient is φ = 100742400.

The previous prime is 100742381. The next prime is 100742417. The reversal of 100742401 is 104247001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71571600 + 29170801 = 8460^2 + 5401^2 .

It is an emirp because it is prime and its reverse (104247001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100742401 - 2⁷ = 100742273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100742431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50371200 + 50371201.

It is an arithmetic number, because the mean of its divisors is an integer number (50371201).

Almost surely, 2^100742401 is an apocalyptic number.

It is an amenable number.

100742401 is a deficient number, since it is larger than the sum of its proper divisors (1).

100742401 is an equidigital number, since it uses as much as digits as its factorization.

100742401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 100742401 is about 10037.0514096521. The cubic root of 100742401 is about 465.3046925861.

Adding to 100742401 its reverse (104247001), we get a palindrome (204989402).

The spelling of 100742401 in words is "one hundred million, seven hundred forty-two thousand, four hundred one".