40420753 has 2 divisors, whose sum is σ = 40420754. Its totient is φ = 40420752.

The previous prime is 40420741. The next prime is 40420763. The reversal of 40420753 is 35702404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27112849 + 13307904 = 5207^2 + 3648^2 .

It is a cyclic number.

It is not a de Polignac number, because 40420753 - 2⁹ = 40420241 is a prime.

It is a super-3 number, since 3×40420753³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (40420763) 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, 20210376 + 20210377.

It is an arithmetic number, because the mean of its divisors is an integer number (20210377).

Almost surely, 2^40420753 is an apocalyptic number.

It is an amenable number.

40420753 is a deficient number, since it is larger than the sum of its proper divisors (1).

40420753 is an equidigital number, since it uses as much as digits as its factorization.

40420753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 40420753 is about 6357.7317496101. The cubic root of 40420753 is about 343.1901384403.

The spelling of 40420753 in words is "forty million, four hundred twenty thousand, seven hundred fifty-three".