1102440421 has 4 divisors (see below), whose sum is σ = 1109839500. Its totient is φ = 1095041344.

The previous prime is 1102440397. The next prime is 1102440433. The reversal of 1102440421 is 1240442011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 731107521 + 371332900 = 27039^2 + 19270^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102440421 - 2¹³ = 1102432229 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 (1102440221) 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, 3699316 + ... + 3699613.

It is an arithmetic number, because the mean of its divisors is an integer number (277459875).

Almost surely, 2^1102440421 is an apocalyptic number.

It is an amenable number.

1102440421 is a deficient number, since it is larger than the sum of its proper divisors (7399079).

1102440421 is an equidigital number, since it uses as much as digits as its factorization.

1102440421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7399078.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1102440421 is about 33203.0182513578. The cubic root of 1102440421 is about 1033.0429449604.

Adding to 1102440421 its reverse (1240442011), we get a palindrome (2342882432).

The spelling of 1102440421 in words is "one billion, one hundred two million, four hundred forty thousand, four hundred twenty-one".