42738503 has 2 divisors, whose sum is σ = 42738504. Its totient is φ = 42738502.

The previous prime is 42738497. The next prime is 42738539. The reversal of 42738503 is 30583724.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42738503 - 2¹² = 42734407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42738503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42738593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21369251 + 21369252.

It is an arithmetic number, because the mean of its divisors is an integer number (21369252).

Almost surely, 2^42738503 is an apocalyptic number.

42738503 is a deficient number, since it is larger than the sum of its proper divisors (1).

42738503 is an equidigital number, since it uses as much as digits as its factorization.

42738503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 42738503 is about 6537.4691586271. The cubic root of 42738503 is about 349.6281847415.

The spelling of 42738503 in words is "forty-two million, seven hundred thirty-eight thousand, five hundred three".