42100403 has 2 divisors, whose sum is σ = 42100404. Its totient is φ = 42100402.

The previous prime is 42100379. The next prime is 42100423. The reversal of 42100403 is 30400124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42100403 - 2¹⁸ = 41838259 is a prime.

It is not a weakly prime, because it can be changed into another prime (42100423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21050201 + 21050202.

It is an arithmetic number, because the mean of its divisors is an integer number (21050202).

Almost surely, 2^42100403 is an apocalyptic number.

42100403 is a deficient number, since it is larger than the sum of its proper divisors (1).

42100403 is an equidigital number, since it uses as much as digits as its factorization.

42100403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 42100403 is about 6488.4823341056. The cubic root of 42100403 is about 347.8794309718.

Adding to 42100403 its reverse (30400124), we get a palindrome (72500527).

The spelling of 42100403 in words is "forty-two million, one hundred thousand, four hundred three".