42537503 has 2 divisors, whose sum is σ = 42537504. Its totient is φ = 42537502.

The previous prime is 42537479. The next prime is 42537581. The reversal of 42537503 is 30573524.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42537503 is a prime.

It is a super-2 number, since 2×42537503² = 3618878322950018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42537203) 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, 21268751 + 21268752.

It is an arithmetic number, because the mean of its divisors is an integer number (21268752).

Almost surely, 2^42537503 is an apocalyptic number.

42537503 is a deficient number, since it is larger than the sum of its proper divisors (1).

42537503 is an equidigital number, since it uses as much as digits as its factorization.

42537503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 42537503 is about 6522.0781197407. The cubic root of 42537503 is about 349.0792205555.

The spelling of 42537503 in words is "forty-two million, five hundred thirty-seven thousand, five hundred three".