100042451 has 2 divisors, whose sum is σ = 100042452. Its totient is φ = 100042450.

The previous prime is 100042447. The next prime is 100042493. The reversal of 100042451 is 154240001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100042451 - 2² = 100042447 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100042421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50021225 + 50021226.

It is an arithmetic number, because the mean of its divisors is an integer number (50021226).

Almost surely, 2^100042451 is an apocalyptic number.

100042451 is a deficient number, since it is larger than the sum of its proper divisors (1).

100042451 is an equidigital number, since it uses as much as digits as its factorization.

100042451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 100042451 is about 10002.1223247869. The cubic root of 100042451 is about 464.2245540987.

Adding to 100042451 its reverse (154240001), we get a palindrome (254282452).

The spelling of 100042451 in words is "one hundred million, forty-two thousand, four hundred fifty-one".