1421434403 has 4 divisors (see below), whose sum is σ = 1496246760. Its totient is φ = 1346622048.

The previous prime is 1421434393. The next prime is 1421434429. The reversal of 1421434403 is 3044341241.

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 1421434403 - 2⁴ = 1421434387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421434463) 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, 37406150 + ... + 37406187.

It is an arithmetic number, because the mean of its divisors is an integer number (374061690).

Almost surely, 2^1421434403 is an apocalyptic number.

1421434403 is a deficient number, since it is larger than the sum of its proper divisors (74812357).

1421434403 is an equidigital number, since it uses as much as digits as its factorization.

1421434403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74812356.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1421434403 is about 37701.9151105086. The cubic root of 1421434403 is about 1124.3692010703.

Adding to 1421434403 its reverse (3044341241), we get a palindrome (4465775644).

The spelling of 1421434403 in words is "one billion, four hundred twenty-one million, four hundred thirty-four thousand, four hundred three".