1102421543 has 4 divisors (see below), whose sum is σ = 1102518480. Its totient is φ = 1102324608.

The previous prime is 1102421539. The next prime is 1102421561. The reversal of 1102421543 is 3451242011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3451242011 = 7 ⋅493034573.

It is a cyclic number.

It is not a de Polignac number, because 1102421543 - 2² = 1102421539 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 (1102421503) 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, 28730 + ... + 55047.

It is an arithmetic number, because the mean of its divisors is an integer number (275629620).

Almost surely, 2^1102421543 is an apocalyptic number.

1102421543 is a deficient number, since it is larger than the sum of its proper divisors (96937).

1102421543 is an equidigital number, since it uses as much as digits as its factorization.

1102421543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96936.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1102421543 is about 33202.7339687562. The cubic root of 1102421543 is about 1033.0370483769.

Adding to 1102421543 its reverse (3451242011), we get a palindrome (4553663554).

The spelling of 1102421543 in words is "one billion, one hundred two million, four hundred twenty-one thousand, five hundred forty-three".