42504047 has 2 divisors, whose sum is σ = 42504048. Its totient is φ = 42504046.

The previous prime is 42504037. The next prime is 42504061. The reversal of 42504047 is 74040524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42504047 - 2¹⁰ = 42503023 is a prime.

It is a super-2 number, since 2×42504047² = 3613188022756418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42504017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21252023 + 21252024.

It is an arithmetic number, because the mean of its divisors is an integer number (21252024).

Almost surely, 2^42504047 is an apocalyptic number.

42504047 is a deficient number, since it is larger than the sum of its proper divisors (1).

42504047 is an equidigital number, since it uses as much as digits as its factorization.

42504047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 42504047 is about 6519.5127885449. The cubic root of 42504047 is about 348.9876789218.

The spelling of 42504047 in words is "forty-two million, five hundred four thousand, forty-seven".