42873737 has 2 divisors, whose sum is σ = 42873738. Its totient is φ = 42873736.

The previous prime is 42873731. The next prime is 42873749. The reversal of 42873737 is 73737824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31990336 + 10883401 = 5656^2 + 3299^2 .

It is a cyclic number.

It is not a de Polignac number, because 42873737 - 2⁶ = 42873673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42873694 and 42873703.

It is not a weakly prime, because it can be changed into another prime (42873731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21436868 + 21436869.

It is an arithmetic number, because the mean of its divisors is an integer number (21436869).

Almost surely, 2^42873737 is an apocalyptic number.

It is an amenable number.

42873737 is a deficient number, since it is larger than the sum of its proper divisors (1).

42873737 is an equidigital number, since it uses as much as digits as its factorization.

42873737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 41.

The square root of 42873737 is about 6547.8039830160. The cubic root of 42873737 is about 349.9965632316.

The spelling of 42873737 in words is "forty-two million, eight hundred seventy-three thousand, seven hundred thirty-seven".