1401420403 has 4 divisors (see below), whose sum is σ = 1406591968. Its totient is φ = 1396248840.

The previous prime is 1401420323. The next prime is 1401420407. The reversal of 1401420403 is 3040241041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3040241041 = 1151 ⋅2641391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401420403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401420407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2585376 + ... + 2585917.

It is an arithmetic number, because the mean of its divisors is an integer number (351647992).

Almost surely, 2^1401420403 is an apocalyptic number.

1401420403 is a deficient number, since it is larger than the sum of its proper divisors (5171565).

1401420403 is an equidigital number, since it uses as much as digits as its factorization.

1401420403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5171564.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1401420403 is about 37435.5499892816. The cubic root of 1401420403 is about 1119.0671449504.

Adding to 1401420403 its reverse (3040241041), we get a palindrome (4441661444).

The spelling of 1401420403 in words is "one billion, four hundred one million, four hundred twenty thousand, four hundred three".