136421352 has 24 divisors (see below), whose sum is σ = 369474690. Its totient is φ = 45473760.

The previous prime is 136421333. The next prime is 136421353. The reversal of 136421352 is 253124631.

136421352 is a `hidden beast` number, since 1 + 3 + 642 + 13 + 5 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 120692196 + 15729156 = 10986^2 + 3966^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×136421352² = 37221570563015808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136421353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 947299 + ... + 947442.

Almost surely, 2^136421352 is an apocalyptic number.

136421352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

136421352 is an abundant number, since it is smaller than the sum of its proper divisors (233053338).

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

136421352 is a wasteful number, since it uses less digits than its factorization.

136421352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894753 (or 1894746 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 136421352 is about 11679.9551369001. The cubic root of 136421352 is about 514.7868562163.

Adding to 136421352 its reverse (253124631), we get a palindrome (389545983).

The spelling of 136421352 in words is "one hundred thirty-six million, four hundred twenty-one thousand, three hundred fifty-two".