42345203 has 2 divisors, whose sum is σ = 42345204. Its totient is φ = 42345202.

The previous prime is 42345197. The next prime is 42345223. The reversal of 42345203 is 30254324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42345203 - 2¹⁶ = 42279667 is a prime.

It is a super-2 number, since 2×42345203² = 3586232434222418, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42345223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21172601 + 21172602.

It is an arithmetic number, because the mean of its divisors is an integer number (21172602).

Almost surely, 2^42345203 is an apocalyptic number.

42345203 is a deficient number, since it is larger than the sum of its proper divisors (1).

42345203 is an equidigital number, since it uses as much as digits as its factorization.

42345203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 42345203 is about 6507.3191868849. The cubic root of 42345203 is about 348.5523964619.

Adding to 42345203 its reverse (30254324), we get a palindrome (72599527).

The spelling of 42345203 in words is "forty-two million, three hundred forty-five thousand, two hundred three".