1403242221 has 4 divisors (see below), whose sum is σ = 1870989632. Its totient is φ = 935494812.

The previous prime is 1403242219. The next prime is 1403242223. The reversal of 1403242221 is 1222423041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1403242219) and next prime (1403242223).

It is not a de Polignac number, because 1403242221 - 2¹ = 1403242219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1403242223) 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, 233873701 + ... + 233873706.

It is an arithmetic number, because the mean of its divisors is an integer number (467747408).

Almost surely, 2^1403242221 is an apocalyptic number.

It is an amenable number.

1403242221 is a deficient number, since it is larger than the sum of its proper divisors (467747411).

1403242221 is an equidigital number, since it uses as much as digits as its factorization.

1403242221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467747410.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1403242221 is about 37459.8748129248. The cubic root of 1403242221 is about 1119.5518564765.

Adding to 1403242221 its reverse (1222423041), we get a palindrome (2625665262).

The spelling of 1403242221 in words is "one billion, four hundred three million, two hundred forty-two thousand, two hundred twenty-one".