42796321 has 2 divisors, whose sum is σ = 42796322. Its totient is φ = 42796320.

The previous prime is 42796291. The next prime is 42796339. The reversal of 42796321 is 12369724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26635921 + 16160400 = 5161^2 + 4020^2 .

It is a cyclic number.

It is not a de Polignac number, because 42796321 - 2⁵ = 42796289 is a prime.

It is a super-2 number, since 2×42796321² = 3663050182270082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42796381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21398160 + 21398161.

It is an arithmetic number, because the mean of its divisors is an integer number (21398161).

Almost surely, 2^42796321 is an apocalyptic number.

It is an amenable number.

42796321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42796321 is an equidigital number, since it uses as much as digits as its factorization.

42796321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 42796321 is about 6541.8897116965. The cubic root of 42796321 is about 349.7857763904.

The spelling of 42796321 in words is "forty-two million, seven hundred ninety-six thousand, three hundred twenty-one".