1040001400 has 24 divisors (see below), whose sum is σ = 2418003720. Its totient is φ = 416000480.

The previous prime is 1040001379. The next prime is 1040001407. The reversal of 1040001400 is 41000401.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040001407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2599804 + ... + 2600203.

It is an arithmetic number, because the mean of its divisors is an integer number (100750155).

Almost surely, 2^1040001400 is an apocalyptic number.

1040001400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040001400 is an abundant number, since it is smaller than the sum of its proper divisors (1378002320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1040001400 is a wasteful number, since it uses less digits than its factorization.

1040001400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200023 (or 5200014 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1040001400 is about 32249.0526992654. The cubic root of 1040001400 is about 1013.1598584428.

Adding to 1040001400 its reverse (41000401), we get a palindrome (1081001801).

Subtracting from 1040001400 its reverse (41000401), we obtain a palindrome (999000999).

It can be divided in two parts, 1040001 and 400, that added together give a palindrome (1040401).

The spelling of 1040001400 in words is "one billion, forty million, one thousand, four hundred".