1072123 has 4 divisors (see below), whose sum is σ = 1154608. Its totient is φ = 989640.

The previous prime is 1072103. The next prime is 1072129. The reversal of 1072123 is 3212701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3212701 = 53 ⋅60617.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1072123 is a prime.

It is a super-2 number, since 2×1072123² = 2298895454258, which contains 22 as substring.

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

1072123 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1072097 and 1072106.

It is not an unprimeable number, because it can be changed into a prime (1072129) 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, 41223 + ... + 41248.

It is an arithmetic number, because the mean of its divisors is an integer number (288652).

2^1072123 is an apocalyptic number.

1072123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1072123 is a deficient number, since it is larger than the sum of its proper divisors (82485).

1072123 is an equidigital number, since it uses as much as digits as its factorization.

1072123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82484.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1072123 is about 1035.4337255469. The cubic root of 1072123 is about 102.3485130876.

Adding to 1072123 its reverse (3212701), we get a palindrome (4284824).

The spelling of 1072123 in words is "one million, seventy-two thousand, one hundred twenty-three".