1406240123 has 4 divisors (see below), whose sum is σ = 1406331720. Its totient is φ = 1406148528.

The previous prime is 1406240113. The next prime is 1406240183. The reversal of 1406240123 is 3210426041.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1406240123 - 2⁴ = 1406240107 is a prime.

It is a super-2 number, since 2×1406240123² = 3955022567070110258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406240113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16538 + ... + 55551.

It is an arithmetic number, because the mean of its divisors is an integer number (351582930).

Almost surely, 2^1406240123 is an apocalyptic number.

1406240123 is a deficient number, since it is larger than the sum of its proper divisors (91597).

1406240123 is an equidigital number, since it uses as much as digits as its factorization.

1406240123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91596.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1406240123 is about 37499.8683064354. The cubic root of 1406240123 is about 1120.3485636504.

Adding to 1406240123 its reverse (3210426041), we get a palindrome (4616666164).

The spelling of 1406240123 in words is "one billion, four hundred six million, two hundred forty thousand, one hundred twenty-three".