1102405861 has 8 divisors (see below), whose sum is σ = 1132632864. Its totient is φ = 1072201680.

The previous prime is 1102405823. The next prime is 1102405879. The reversal of 1102405861 is 1685042011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1102405861 - 2¹³ = 1102397669 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 (1102405891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147726 + ... + 155008.

It is an arithmetic number, because the mean of its divisors is an integer number (141579108).

Almost surely, 2^1102405861 is an apocalyptic number.

It is an amenable number.

1102405861 is a deficient number, since it is larger than the sum of its proper divisors (30227003).

1102405861 is an equidigital number, since it uses as much as digits as its factorization.

1102405861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11411.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 1102405861 is about 33202.4978126646. The cubic root of 1102405861 is about 1033.0321500196.

Adding to 1102405861 its reverse (1685042011), we get a palindrome (2787447872).

The spelling of 1102405861 in words is "one billion, one hundred two million, four hundred five thousand, eight hundred sixty-one".