1292921023 has 2 divisors, whose sum is σ = 1292921024. Its totient is φ = 1292921022.

The previous prime is 1292921017. The next prime is 1292921039. The reversal of 1292921023 is 3201292921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1292921023 - 2⁵ = 1292920991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1292927023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646460511 + 646460512.

It is an arithmetic number, because the mean of its divisors is an integer number (646460512).

Almost surely, 2^1292921023 is an apocalyptic number.

1292921023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292921023 is an equidigital number, since it uses as much as digits as its factorization.

1292921023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1292921023 is about 35957.2110014111. The cubic root of 1292921023 is about 1089.4082647967.

The spelling of 1292921023 in words is "one billion, two hundred ninety-two million, nine hundred twenty-one thousand, twenty-three".