719824121 has 2 divisors, whose sum is σ = 719824122. Its totient is φ = 719824120.

The previous prime is 719824073. The next prime is 719824141. The reversal of 719824121 is 121428917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 432182521 + 287641600 = 20789^2 + 16960^2 .

It is a cyclic number.

It is not a de Polignac number, because 719824121 - 2²⁶ = 652715257 is a prime.

It is not a weakly prime, because it can be changed into another prime (719824141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359912060 + 359912061.

It is an arithmetic number, because the mean of its divisors is an integer number (359912061).

Almost surely, 2^719824121 is an apocalyptic number.

It is an amenable number.

719824121 is a deficient number, since it is larger than the sum of its proper divisors (1).

719824121 is an equidigital number, since it uses as much as digits as its factorization.

719824121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 35.

The square root of 719824121 is about 26829.5382181654. The cubic root of 719824121 is about 896.2079632769.

The spelling of 719824121 in words is "seven hundred nineteen million, eight hundred twenty-four thousand, one hundred twenty-one".