42892321 has 2 divisors, whose sum is σ = 42892322. Its totient is φ = 42892320.

The previous prime is 42892303. The next prime is 42892357. The reversal of 42892321 is 12329824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34939921 + 7952400 = 5911^2 + 2820^2 .

It is a cyclic number.

It is not a de Polignac number, because 42892321 - 2⁷ = 42892193 is a prime.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (42892301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21446160 + 21446161.

It is an arithmetic number, because the mean of its divisors is an integer number (21446161).

Almost surely, 2^42892321 is an apocalyptic number.

It is an amenable number.

42892321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42892321 is an equidigital number, since it uses as much as digits as its factorization.

42892321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 42892321 is about 6549.2229310049. Note that the first 3 decimals coincide. The cubic root of 42892321 is about 350.0471256273.

The spelling of 42892321 in words is "forty-two million, eight hundred ninety-two thousand, three hundred twenty-one".