136004281 has 8 divisors (see below), whose sum is σ = 155988864. Its totient is φ = 116158560.

The previous prime is 136004279. The next prime is 136004303. The reversal of 136004281 is 182400631.

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

It is not a de Polignac number, because 136004281 - 2¹ = 136004279 is a prime.

It is a super-2 number, since 2×136004281² = 36994328900653922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136004251) 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, 32605 + ... + 36538.

It is an arithmetic number, because the mean of its divisors is an integer number (19498608).

Almost surely, 2^136004281 is an apocalyptic number.

It is an amenable number.

136004281 is a deficient number, since it is larger than the sum of its proper divisors (19984583).

136004281 is an equidigital number, since it uses as much as digits as its factorization.

136004281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69431.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 136004281 is about 11662.0873346070. The cubic root of 136004281 is about 514.2617139851.

It can be divided in two parts, 136004 and 281, that multiplied together give a square (38217124 = 6182²).

The spelling of 136004281 in words is "one hundred thirty-six million, four thousand, two hundred eighty-one".