135744001 has 4 divisors (see below), whose sum is σ = 135925504. Its totient is φ = 135562500.

The previous prime is 135743981. The next prime is 135744019. The reversal of 135744001 is 100447531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100447531 = 643 ⋅156217.

It is a cyclic number.

It is not a de Polignac number, because 135744001 - 2¹⁷ = 135612929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135744061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89625 + ... + 91126.

It is an arithmetic number, because the mean of its divisors is an integer number (33981376).

Almost surely, 2^135744001 is an apocalyptic number.

It is an amenable number.

135744001 is a deficient number, since it is larger than the sum of its proper divisors (181503).

135744001 is an equidigital number, since it uses as much as digits as its factorization.

135744001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181502.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 135744001 is about 11650.9227531556. The cubic root of 135744001 is about 513.9334460907.

The spelling of 135744001 in words is "one hundred thirty-five million, seven hundred forty-four thousand, one".