1234423212409 has 2 divisors, whose sum is σ = 1234423212410. Its totient is φ = 1234423212408.

The previous prime is 1234423212391. The next prime is 1234423212427. The reversal of 1234423212409 is 9042123244321.

It is a balanced prime because it is at equal distance from previous prime (1234423212391) and next prime (1234423212427).

It can be written as a sum of positive squares in only one way, i.e., 1114618620025 + 119804592384 = 1055755^2 + 346128^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234423212409 - 2¹⁵ = 1234423179641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1234423212469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617211606204 + 617211606205.

It is an arithmetic number, because the mean of its divisors is an integer number (617211606205).

Almost surely, 2^{1234423212409} is an apocalyptic number.

It is an amenable number.

1234423212409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234423212409 is an equidigital number, since it uses as much as digits as its factorization.

1234423212409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 1234423212409 in words is "one trillion, two hundred thirty-four billion, four hundred twenty-three million, two hundred twelve thousand, four hundred nine".