40212433 has 2 divisors, whose sum is σ = 40212434. Its totient is φ = 40212432.

The previous prime is 40212427. The next prime is 40212449. The reversal of 40212433 is 33421204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36144144 + 4068289 = 6012^2 + 2017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40212433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40212433.

It is not a weakly prime, because it can be changed into another prime (40212413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20106216 + 20106217.

It is an arithmetic number, because the mean of its divisors is an integer number (20106217).

Almost surely, 2^40212433 is an apocalyptic number.

It is an amenable number.

40212433 is a deficient number, since it is larger than the sum of its proper divisors (1).

40212433 is an equidigital number, since it uses as much as digits as its factorization.

40212433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40212433 is about 6341.3273847042. The cubic root of 40212433 is about 342.5995462505.

Adding to 40212433 its reverse (33421204), we get a palindrome (73633637).

The spelling of 40212433 in words is "forty million, two hundred twelve thousand, four hundred thirty-three".