1040402404023 has 8 divisors (see below), whose sum is σ = 1387237156848. Its totient is φ = 693584626944.

The previous prime is 1040402403979. The next prime is 1040402404039. The reversal of 1040402404023 is 3204042040401.

It is a happy number.

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

It is not a de Polignac number, because 1040402404023 - 2²⁸ = 1040133968567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1040402403984 and 1040402404002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040402403023) 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, 4100236 + ... + 4346577.

It is an arithmetic number, because the mean of its divisors is an integer number (173404644606).

Almost surely, 2^{1040402404023} is an apocalyptic number.

1040402404023 is a deficient number, since it is larger than the sum of its proper divisors (346834752825).

1040402404023 is an equidigital number, since it uses as much as digits as its factorization.

1040402404023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8487873.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 1040402404023 its reverse (3204042040401), we get a palindrome (4244444444424).

The spelling of 1040402404023 in words is "one trillion, forty billion, four hundred two million, four hundred four thousand, twenty-three".