1501123 has 4 divisors (see below), whose sum is σ = 1616608. Its totient is φ = 1385640.

The previous prime is 1501081. The next prime is 1501139. The reversal of 1501123 is 3211051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3211051 = 73 ⋅43987.

It is a cyclic number.

It is not a de Polignac number, because 1501123 - 2¹⁷ = 1370051 is a prime.

It is a super-2 number, since 2×1501123² = 4506740522258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 115471 = 1501123 / (1 + 5 + 0 + 1 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1501193) 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, 57723 + ... + 57748.

It is an arithmetic number, because the mean of its divisors is an integer number (404152).

2^1501123 is an apocalyptic number.

1501123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1501123 is a deficient number, since it is larger than the sum of its proper divisors (115485).

1501123 is a wasteful number, since it uses less digits than its factorization.

1501123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115484.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1501123 is about 1225.2032484449. The cubic root of 1501123 is about 114.4999841091.

Adding to 1501123 its reverse (3211051), we get a palindrome (4712174).

The spelling of 1501123 in words is "one million, five hundred one thousand, one hundred twenty-three".