11402001 has 12 divisors (see below), whose sum is σ = 17736628. Its totient is φ = 7016544.

The previous prime is 11401987. The next prime is 11402003. The reversal of 11402001 is 10020411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4511376 + 6890625 = 2124^2 + 2625^2 .

It is not a de Polignac number, because 11402001 - 2⁵ = 11401969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11402003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48610 + ... + 48843.

Almost surely, 2^11402001 is an apocalyptic number.

It is an amenable number.

11402001 is a deficient number, since it is larger than the sum of its proper divisors (6334627).

11402001 is a wasteful number, since it uses less digits than its factorization.

11402001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97472 (or 97469 counting only the distinct ones).

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

The square root of 11402001 is about 3376.6849127510. The cubic root of 11402001 is about 225.0748787817.

Adding to 11402001 its reverse (10020411), we get a palindrome (21422412).

The spelling of 11402001 in words is "eleven million, four hundred two thousand, one".