1126402004 has 144 divisors (see below), whose sum is σ = 2654467200. Its totient is φ = 413247744.

The previous prime is 1126402003. The next prime is 1126402049. The reversal of 1126402004 is 4002046211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126402001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2565617 + ... + 2566055.

It is an arithmetic number, because the mean of its divisors is an integer number (18433800).

Almost surely, 2^1126402004 is an apocalyptic number.

1126402004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1126402004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1327233600).

1126402004 is an abundant number, since it is smaller than the sum of its proper divisors (1528065196).

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

1126402004 is a wasteful number, since it uses less digits than its factorization.

1126402004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1126402004 is about 33561.9129967289. The cubic root of 1126402004 is about 1040.4737745227.

Adding to 1126402004 its reverse (4002046211), we get a palindrome (5128448215).

The spelling of 1126402004 in words is "one billion, one hundred twenty-six million, four hundred two thousand, four".