1401256223 has 4 divisors (see below), whose sum is σ = 1401415848. Its totient is φ = 1401096600.

The previous prime is 1401256201. The next prime is 1401256247. The reversal of 1401256223 is 3226521041.

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: 3226521041 = 103 ⋅31325447.

It is a cyclic number.

It is not a de Polignac number, because 1401256223 - 2⁶ = 1401256159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1401256192 and 1401256201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401256273) 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, 65828 + ... + 84473.

It is an arithmetic number, because the mean of its divisors is an integer number (350353962).

Almost surely, 2^1401256223 is an apocalyptic number.

1401256223 is a deficient number, since it is larger than the sum of its proper divisors (159625).

1401256223 is an equidigital number, since it uses as much as digits as its factorization.

1401256223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159624.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1401256223 is about 37433.3570896333. The cubic root of 1401256223 is about 1119.0234427136.

Adding to 1401256223 its reverse (3226521041), we get a palindrome (4627777264).

The spelling of 1401256223 in words is "one billion, four hundred one million, two hundred fifty-six thousand, two hundred twenty-three".