42775433 has 2 divisors, whose sum is σ = 42775434. Its totient is φ = 42775432.

The previous prime is 42775427. The next prime is 42775471. The reversal of 42775433 is 33457724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24482704 + 18292729 = 4948^2 + 4277^2 .

It is a cyclic number.

It is not a de Polignac number, because 42775433 - 2²² = 38581129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42775393 and 42775402.

It is not a weakly prime, because it can be changed into another prime (42775483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387716 + 21387717.

It is an arithmetic number, because the mean of its divisors is an integer number (21387717).

Almost surely, 2^42775433 is an apocalyptic number.

It is an amenable number.

42775433 is a deficient number, since it is larger than the sum of its proper divisors (1).

42775433 is an equidigital number, since it uses as much as digits as its factorization.

42775433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 35.

The square root of 42775433 is about 6540.2930362485. The cubic root of 42775433 is about 349.7288593928.

The spelling of 42775433 in words is "forty-two million, seven hundred seventy-five thousand, four hundred thirty-three".