1292194000421 has 4 divisors (see below), whose sum is σ = 1309895288172. Its totient is φ = 1274492712672.

The previous prime is 1292194000411. The next prime is 1292194000439. The reversal of 1292194000421 is 1240004912921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1018052748196 + 274141252225 = 1008986^2 + 523585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1292194000421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292194000411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8850643766 + ... + 8850643911.

It is an arithmetic number, because the mean of its divisors is an integer number (327473822043).

Almost surely, 2^{1292194000421} is an apocalyptic number.

It is an amenable number.

1292194000421 is a deficient number, since it is larger than the sum of its proper divisors (17701287751).

1292194000421 is an equidigital number, since it uses as much as digits as its factorization.

1292194000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17701287750.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 1292194000421 in words is "one trillion, two hundred ninety-two billion, one hundred ninety-four million, four hundred twenty-one", and thus it is an aban number.