42403937 has 2 divisors, whose sum is σ = 42403938. Its totient is φ = 42403936.

The previous prime is 42403919. The next prime is 42403951. The reversal of 42403937 is 73930424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42393121 + 10816 = 6511^2 + 104^2 .

It is a cyclic number.

It is not a de Polignac number, because 42403937 - 2⁶ = 42403873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42403957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201968 + 21201969.

It is an arithmetic number, because the mean of its divisors is an integer number (21201969).

Almost surely, 2^42403937 is an apocalyptic number.

It is an amenable number.

42403937 is a deficient number, since it is larger than the sum of its proper divisors (1).

42403937 is an equidigital number, since it uses as much as digits as its factorization.

42403937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 42403937 is about 6511.8305414069. The cubic root of 42403937 is about 348.7134727056.

The spelling of 42403937 in words is "forty-two million, four hundred three thousand, nine hundred thirty-seven".