42823453 has 2 divisors, whose sum is σ = 42823454. Its totient is φ = 42823452.

The previous prime is 42823421. The next prime is 42823483. The reversal of 42823453 is 35432824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37970244 + 4853209 = 6162^2 + 2203^2 .

It is a cyclic number.

It is not a de Polignac number, because 42823453 - 2⁵ = 42823421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42823483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21411726 + 21411727.

It is an arithmetic number, because the mean of its divisors is an integer number (21411727).

Almost surely, 2^42823453 is an apocalyptic number.

It is an amenable number.

42823453 is a deficient number, since it is larger than the sum of its proper divisors (1).

42823453 is an equidigital number, since it uses as much as digits as its factorization.

42823453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 31.

The square root of 42823453 is about 6543.9630958617. The cubic root of 42823453 is about 349.8596798055.

The spelling of 42823453 in words is "forty-two million, eight hundred twenty-three thousand, four hundred fifty-three".