42380837 has 2 divisors, whose sum is σ = 42380838. Its totient is φ = 42380836.

The previous prime is 42380797. The next prime is 42380957. The reversal of 42380837 is 73808324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41550916 + 829921 = 6446^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 42380837 - 2⁸ = 42380581 is a prime.

It is a super-2 number, since 2×42380837² = 3592270689641138, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42380797 and 42380806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42386837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21190418 + 21190419.

It is an arithmetic number, because the mean of its divisors is an integer number (21190419).

Almost surely, 2^42380837 is an apocalyptic number.

It is an amenable number.

42380837 is a deficient number, since it is larger than the sum of its proper divisors (1).

42380837 is an equidigital number, since it uses as much as digits as its factorization.

42380837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 42380837 is about 6510.0566049766. The cubic root of 42380837 is about 348.6501394008.

The spelling of 42380837 in words is "forty-two million, three hundred eighty thousand, eight hundred thirty-seven".