1772423123 has 4 divisors (see below), whose sum is σ = 1773085440. Its totient is φ = 1771760808.

The previous prime is 1772423117. The next prime is 1772423129. The reversal of 1772423123 is 3213242771.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3213242771 = 61 ⋅52676111.

It is an interprime number because it is at equal distance from previous prime (1772423117) and next prime (1772423129).

It is a cyclic number.

It is not a de Polignac number, because 1772423123 - 2¹⁸ = 1772160979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1772423123.

It is not an unprimeable number, because it can be changed into a prime (1772423129) 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, 327128 + ... + 332501.

It is an arithmetic number, because the mean of its divisors is an integer number (443271360).

Almost surely, 2^1772423123 is an apocalyptic number.

1772423123 is a deficient number, since it is larger than the sum of its proper divisors (662317).

1772423123 is an equidigital number, since it uses as much as digits as its factorization.

1772423123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662316.

The product of its digits is 14112, while the sum is 32.

The square root of 1772423123 is about 42100.1558548184. The cubic root of 1772423123 is about 1210.1962487053.

Adding to 1772423123 its reverse (3213242771), we get a palindrome (4985665894).

The spelling of 1772423123 in words is "one billion, seven hundred seventy-two million, four hundred twenty-three thousand, one hundred twenty-three".