42503897 has 2 divisors, whose sum is σ = 42503898. Its totient is φ = 42503896.

The previous prime is 42503891. The next prime is 42503939. The reversal of 42503897 is 79830524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35868121 + 6635776 = 5989^2 + 2576^2 .

It is a cyclic number.

It is not a de Polignac number, because 42503897 - 2⁶ = 42503833 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42503897.

It is not a weakly prime, because it can be changed into another prime (42503891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21251948 + 21251949.

It is an arithmetic number, because the mean of its divisors is an integer number (21251949).

Almost surely, 2^42503897 is an apocalyptic number.

It is an amenable number.

42503897 is a deficient number, since it is larger than the sum of its proper divisors (1).

42503897 is an equidigital number, since it uses as much as digits as its factorization.

42503897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 42503897 is about 6519.5012846076. The cubic root of 42503897 is about 348.9872683867.

The spelling of 42503897 in words is "forty-two million, five hundred three thousand, eight hundred ninety-seven".