1292723 has 4 divisors (see below), whose sum is σ = 1317168. Its totient is φ = 1268280.

The previous prime is 1292717. The next prime is 1292729. The reversal of 1292723 is 3272921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3272921 = 19 ⋅172259.

It is an interprime number because it is at equal distance from previous prime (1292717) and next prime (1292729).

It is a cyclic number.

It is not a de Polignac number, because 1292723 - 2⁶ = 1292659 is a prime.

It is a super-2 number, since 2×1292723² = 3342265509458, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1292692 and 1292701.

It is not an unprimeable number, because it can be changed into a prime (1292729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12143 + ... + 12248.

It is an arithmetic number, because the mean of its divisors is an integer number (329292).

2^1292723 is an apocalyptic number.

1292723 is a deficient number, since it is larger than the sum of its proper divisors (24445).

1292723 is an equidigital number, since it uses as much as digits as its factorization.

1292723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24444.

The product of its digits is 1512, while the sum is 26.

The square root of 1292723 is about 1136.9797711481. The cubic root of 1292723 is about 108.9352644254.

The spelling of 1292723 in words is "one million, two hundred ninety-two thousand, seven hundred twenty-three".