42123337 has 2 divisors, whose sum is σ = 42123338. Its totient is φ = 42123336.

The previous prime is 42123329. The next prime is 42123379. The reversal of 42123337 is 73332124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22240656 + 19882681 = 4716^2 + 4459^2 .

It is a cyclic number.

It is not a de Polignac number, because 42123337 - 2³ = 42123329 is a prime.

It is not a weakly prime, because it can be changed into another prime (42123937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061668 + 21061669.

It is an arithmetic number, because the mean of its divisors is an integer number (21061669).

Almost surely, 2^42123337 is an apocalyptic number.

It is an amenable number.

42123337 is a deficient number, since it is larger than the sum of its proper divisors (1).

42123337 is an equidigital number, since it uses as much as digits as its factorization.

42123337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 25.

The square root of 42123337 is about 6490.2493788760. The cubic root of 42123337 is about 347.9425880759.

The spelling of 42123337 in words is "forty-two million, one hundred twenty-three thousand, three hundred thirty-seven".