42100451 has 2 divisors, whose sum is σ = 42100452. Its totient is φ = 42100450.

The previous prime is 42100439. The next prime is 42100463. The reversal of 42100451 is 15400124.

It is a balanced prime because it is at equal distance from previous prime (42100439) and next prime (42100463).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42100451 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42100151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21050225 + 21050226.

It is an arithmetic number, because the mean of its divisors is an integer number (21050226).

Almost surely, 2^42100451 is an apocalyptic number.

42100451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42100451 is an equidigital number, since it uses as much as digits as its factorization.

42100451 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 42100451 is about 6488.4860329664. The cubic root of 42100451 is about 347.8795631812.

Adding to 42100451 its reverse (15400124), we get a palindrome (57500575).

The spelling of 42100451 in words is "forty-two million, one hundred thousand, four hundred fifty-one".