133640410 has 16 divisors (see below), whose sum is σ = 248848200. Its totient is φ = 51612736.

The previous prime is 133640407. The next prime is 133640413. The reversal of 133640410 is 14046331.

133640410 = 438² + 439² + ... + 785².

It is an interprime number because it is at equal distance from previous prime (133640407) and next prime (133640413).

It can be written as a sum of positive squares in 4 ways, for example, as 131308681 + 2331729 = 11459^2 + 1527^2 .

It is not an unprimeable number, because it can be changed into a prime (133640413) 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 7 ways as a sum of consecutive naturals, for example, 230125 + ... + 230704.

Almost surely, 2^133640410 is an apocalyptic number.

133640410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133640410 is a deficient number, since it is larger than the sum of its proper divisors (115207790).

133640410 is a wasteful number, since it uses less digits than its factorization.

133640410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460865.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 133640410 is about 11560.2945464205. The cubic root of 133640410 is about 511.2648471407.

Adding to 133640410 its reverse (14046331), we get a palindrome (147686741).

The spelling of 133640410 in words is "one hundred thirty-three million, six hundred forty thousand, four hundred ten".