1401123443 has 4 divisors (see below), whose sum is σ = 1420857648. Its totient is φ = 1381389240.

The previous prime is 1401123431. The next prime is 1401123467. The reversal of 1401123443 is 3443211041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1401123443 - 2²² = 1396929139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401123473) 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, 9866996 + ... + 9867137.

It is an arithmetic number, because the mean of its divisors is an integer number (355214412).

Almost surely, 2^1401123443 is an apocalyptic number.

1401123443 is a deficient number, since it is larger than the sum of its proper divisors (19734205).

1401123443 is an equidigital number, since it uses as much as digits as its factorization.

1401123443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19734204.

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

The square root of 1401123443 is about 37431.5834957593. The cubic root of 1401123443 is about 1118.9880961858.

Adding to 1401123443 its reverse (3443211041), we get a palindrome (4844334484).

The spelling of 1401123443 in words is "one billion, four hundred one million, one hundred twenty-three thousand, four hundred forty-three".