42030437 has 2 divisors, whose sum is σ = 42030438. Its totient is φ = 42030436.

The previous prime is 42030421. The next prime is 42030473. The reversal of 42030437 is 73403024.

It is a happy number.

Together with next prime (42030473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39866596 + 2163841 = 6314^2 + 1471^2 .

It is a cyclic number.

It is not a de Polignac number, because 42030437 - 2⁴ = 42030421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42030487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21015218 + 21015219.

It is an arithmetic number, because the mean of its divisors is an integer number (21015219).

Almost surely, 2^42030437 is an apocalyptic number.

It is an amenable number.

42030437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42030437 is an equidigital number, since it uses as much as digits as its factorization.

42030437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 42030437 is about 6483.0885386519. The cubic root of 42030437 is about 347.6866123267.

The spelling of 42030437 in words is "forty-two million, thirty thousand, four hundred thirty-seven".