42667523 has 2 divisors, whose sum is σ = 42667524. Its totient is φ = 42667522.

The previous prime is 42667519. The next prime is 42667529. The reversal of 42667523 is 32576624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42667523 - 2² = 42667519 is a prime.

It is not a weakly prime, because it can be changed into another prime (42667529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21333761 + 21333762.

It is an arithmetic number, because the mean of its divisors is an integer number (21333762).

Almost surely, 2^42667523 is an apocalyptic number.

42667523 is a deficient number, since it is larger than the sum of its proper divisors (1).

42667523 is an equidigital number, since it uses as much as digits as its factorization.

42667523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 35.

The square root of 42667523 is about 6532.0381964591. The cubic root of 42667523 is about 349.4345236166.

The spelling of 42667523 in words is "forty-two million, six hundred sixty-seven thousand, five hundred twenty-three".