42637043 has 2 divisors, whose sum is σ = 42637044. Its totient is φ = 42637042.

The previous prime is 42637031. The next prime is 42637057. The reversal of 42637043 is 34073624.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42637043 - 2⁴ = 42637027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42636997 and 42637015.

It is not a weakly prime, because it can be changed into another prime (42637093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21318521 + 21318522.

It is an arithmetic number, because the mean of its divisors is an integer number (21318522).

Almost surely, 2^42637043 is an apocalyptic number.

42637043 is a deficient number, since it is larger than the sum of its proper divisors (1).

42637043 is an equidigital number, since it uses as much as digits as its factorization.

42637043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 42637043 is about 6529.7046640717. The cubic root of 42637043 is about 349.3512963694.

The spelling of 42637043 in words is "forty-two million, six hundred thirty-seven thousand, forty-three".