1203402564 has 216 divisors, whose sum is σ = 3857177688. Its totient is φ = 313528320.

The previous prime is 1203402559. The next prime is 1203402569. The reversal of 1203402564 is 4652043021.

1203402564 is a `hidden beast` number, since 1 + 203 + 402 + 56 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1203402559) and next prime (1203402569).

It can be written as a sum of positive squares in 4 ways, for example, as 17288964 + 1186113600 = 4158^2 + 34440^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203402569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2224134 + ... + 2224674.

Almost surely, 2^1203402564 is an apocalyptic number.

1203402564 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 1203402564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1928588844).

1203402564 is an abundant number, since it is smaller than the sum of its proper divisors (2653775124).

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

1203402564 is a wasteful number, since it uses less digits than its factorization.

1203402564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1203402564 is about 34690.0931679348. The cubic root of 1203402564 is about 1063.6620002109.

Adding to 1203402564 its reverse (4652043021), we get a palindrome (5855445585).

The spelling of 1203402564 in words is "one billion, two hundred three million, four hundred two thousand, five hundred sixty-four".