445021123 has 2 divisors, whose sum is σ = 445021124. Its totient is φ = 445021122.

The previous prime is 445021117. The next prime is 445021139. The reversal of 445021123 is 321120544.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445021123 is a prime.

It is a super-2 number, since 2×445021123² = 396087599832362258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 445021094 and 445021103.

It is not a weakly prime, because it can be changed into another prime (445021103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222510561 + 222510562.

It is an arithmetic number, because the mean of its divisors is an integer number (222510562).

Almost surely, 2^445021123 is an apocalyptic number.

445021123 is a deficient number, since it is larger than the sum of its proper divisors (1).

445021123 is an equidigital number, since it uses as much as digits as its factorization.

445021123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 445021123 is about 21095.5237669037. The cubic root of 445021123 is about 763.4727517931.

Adding to 445021123 its reverse (321120544), we get a palindrome (766141667).

The spelling of 445021123 in words is "four hundred forty-five million, twenty-one thousand, one hundred twenty-three".