1102401 has 6 divisors (see below), whose sum is σ = 1592370. Its totient is φ = 734928.

The previous prime is 1102397. The next prime is 1102411. The reversal of 1102401 is 1042011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1040400 + 62001 = 1020^2 + 249^2 .

It is not a de Polignac number, because 1102401 - 2² = 1102397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 122489 = 1102401 / (1 + 1 + 0 + 2 + 4 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (1102411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61236 + ... + 61253.

It is an arithmetic number, because the mean of its divisors is an integer number (265395).

2^1102401 is an apocalyptic number.

It is an amenable number.

1102401 is a deficient number, since it is larger than the sum of its proper divisors (489969).

1102401 is a wasteful number, since it uses less digits than its factorization.

1102401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122495 (or 122492 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1102401 is about 1049.9528560845. The cubic root of 1102401 is about 103.3030631651.

Adding to 1102401 its reverse (1042011), we get a palindrome (2144412).

The spelling of 1102401 in words is "one million, one hundred two thousand, four hundred one".