1026401403 has 8 divisors (see below), whose sum is σ = 1368705600. Its totient is φ = 684182408.

The previous prime is 1026401353. The next prime is 1026401449. The reversal of 1026401403 is 3041046201.

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

It is a cyclic number.

It is not a de Polignac number, because 1026401403 - 2¹³ = 1026393211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1026401403.

It is not an unprimeable number, because it can be changed into a prime (1026401003) 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, 16288 + ... + 48146.

It is an arithmetic number, because the mean of its divisors is an integer number (171088200).

Almost surely, 2^1026401403 is an apocalyptic number.

1026401403 is a deficient number, since it is larger than the sum of its proper divisors (342304197).

1026401403 is a wasteful number, since it uses less digits than its factorization.

1026401403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42601.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1026401403 is about 32037.4999492782. The cubic root of 1026401403 is about 1008.7241357885.

Adding to 1026401403 its reverse (3041046201), we get a palindrome (4067447604).

The spelling of 1026401403 in words is "one billion, twenty-six million, four hundred one thousand, four hundred three".