1421123219 has 2 divisors, whose sum is σ = 1421123220. Its totient is φ = 1421123218.

The previous prime is 1421123213. The next prime is 1421123233. The reversal of 1421123219 is 9123211241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1421123219 - 2⁴ = 1421123203 is a prime.

It is a super-2 number, since 2×1421123219² = 4039182407161843922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1421123213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710561609 + 710561610.

It is an arithmetic number, because the mean of its divisors is an integer number (710561610).

Almost surely, 2^1421123219 is an apocalyptic number.

1421123219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421123219 is an equidigital number, since it uses as much as digits as its factorization.

1421123219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 26.

The square root of 1421123219 is about 37697.7879855039. The cubic root of 1421123219 is about 1124.2871451695.

The spelling of 1421123219 in words is "one billion, four hundred twenty-one million, one hundred twenty-three thousand, two hundred nineteen".