842661433 has 2 divisors, whose sum is σ = 842661434. Its totient is φ = 842661432.

The previous prime is 842661431. The next prime is 842661493. The reversal of 842661433 is 334166248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 625600144 + 217061289 = 25012^2 + 14733^2 .

It is a cyclic number.

It is not a de Polignac number, because 842661433 - 2¹ = 842661431 is a prime.

It is a super-2 number, since 2×842661433² = 1420156581331226978, which contains 22 as substring.

Together with 842661431, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 842661392 and 842661401.

It is not a weakly prime, because it can be changed into another prime (842661431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421330716 + 421330717.

It is an arithmetic number, because the mean of its divisors is an integer number (421330717).

Almost surely, 2^842661433 is an apocalyptic number.

It is an amenable number.

842661433 is a deficient number, since it is larger than the sum of its proper divisors (1).

842661433 is an equidigital number, since it uses as much as digits as its factorization.

842661433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 37.

The square root of 842661433 is about 29028.6312629445. The cubic root of 842661433 is about 944.5342396524.

The spelling of 842661433 in words is "eight hundred forty-two million, six hundred sixty-one thousand, four hundred thirty-three".