42386737 has 2 divisors, whose sum is σ = 42386738. Its totient is φ = 42386736.

The previous prime is 42386731. The next prime is 42386749. The reversal of 42386737 is 73768324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27363361 + 15023376 = 5231^2 + 3876^2 .

It is a cyclic number.

It is not a de Polignac number, because 42386737 - 2⁷ = 42386609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42386737.

It is not a weakly prime, because it can be changed into another prime (42386731) 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, 21193368 + 21193369.

It is an arithmetic number, because the mean of its divisors is an integer number (21193369).

Almost surely, 2^42386737 is an apocalyptic number.

It is an amenable number.

42386737 is a deficient number, since it is larger than the sum of its proper divisors (1).

42386737 is an equidigital number, since it uses as much as digits as its factorization.

42386737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 40.

The square root of 42386737 is about 6510.5097342681. The cubic root of 42386737 is about 348.6663176276. Note that the first 3 decimals are identical.

The spelling of 42386737 in words is "forty-two million, three hundred eighty-six thousand, seven hundred thirty-seven".