1421301403 has 32 divisors (see below), whose sum is σ = 1580057600. Its totient is φ = 1277246880.

The previous prime is 1421301389. The next prime is 1421301443. The reversal of 1421301403 is 3041031241.

It is a de Polignac number, because none of the positive numbers 2^k-1421301403 is a prime.

It is a super-3 number, since 3×1421301403³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421301443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17991118 + ... + 17991196.

It is an arithmetic number, because the mean of its divisors is an integer number (49376800).

Almost surely, 2^1421301403 is an apocalyptic number.

1421301403 is a deficient number, since it is larger than the sum of its proper divisors (158756197).

1421301403 is an frugal number, since it uses more digits than its factorization.

1421301403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1421301403 is about 37700.1512331184. The cubic root of 1421301403 is about 1124.3341318549.

Adding to 1421301403 its reverse (3041031241), we get a palindrome (4462332644).

The spelling of 1421301403 in words is "one billion, four hundred twenty-one million, three hundred one thousand, four hundred three".