42044237 has 2 divisors, whose sum is σ = 42044238. Its totient is φ = 42044236.

The previous prime is 42044203. The next prime is 42044251. The reversal of 42044237 is 73244024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27520516 + 14523721 = 5246^2 + 3811^2 .

It is a cyclic number.

It is not a de Polignac number, because 42044237 - 2¹⁶ = 41978701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42044267) 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, 21022118 + 21022119.

It is an arithmetic number, because the mean of its divisors is an integer number (21022119).

Almost surely, 2^42044237 is an apocalyptic number.

It is an amenable number.

42044237 is a deficient number, since it is larger than the sum of its proper divisors (1).

42044237 is an equidigital number, since it uses as much as digits as its factorization.

42044237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 42044237 is about 6484.1527588421. The cubic root of 42044237 is about 347.7246605489.

The spelling of 42044237 in words is "forty-two million, forty-four thousand, two hundred thirty-seven".