402040001 has 8 divisors (see below), whose sum is σ = 438760800. Its totient is φ = 365347840.

The previous prime is 402039997. The next prime is 402040007. The reversal of 402040001 is 100040204.

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

It is not a de Polignac number, because 402040001 - 2² = 402039997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (402040007) 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, 31130 + ... + 42108.

It is an arithmetic number, because the mean of its divisors is an integer number (54845100).

Almost surely, 2^402040001 is an apocalyptic number.

It is an amenable number.

402040001 is a deficient number, since it is larger than the sum of its proper divisors (36720799).

402040001 is a wasteful number, since it uses less digits than its factorization.

402040001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14319.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 402040001 is about 20050.9351652236. The cubic root of 402040001 is about 738.0567476921.

Adding to 402040001 its reverse (100040204), we get a palindrome (502080205).

The spelling of 402040001 in words is "four hundred two million, forty thousand, one".