149201017 has 4 divisors (see below), whose sum is σ = 170515456. Its totient is φ = 127886580.

The previous prime is 149200999. The next prime is 149201141. The reversal of 149201017 is 710102941.

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: 710102941 = 19 ⋅37373839.

It is a cyclic number.

It is not a de Polignac number, because 149201017 - 2²⁷ = 14983289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149200982 and 149201000.

It is not an unprimeable number, because it can be changed into a prime (149201917) 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, 10657209 + ... + 10657222.

It is an arithmetic number, because the mean of its divisors is an integer number (42628864).

Almost surely, 2^149201017 is an apocalyptic number.

It is an amenable number.

149201017 is a deficient number, since it is larger than the sum of its proper divisors (21314439).

149201017 is an equidigital number, since it uses as much as digits as its factorization.

149201017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21314438.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 149201017 is about 12214.7868176240. The cubic root of 149201017 is about 530.3842200302.

Adding to 149201017 its reverse (710102941), we get a palindrome (859303958).

The spelling of 149201017 in words is "one hundred forty-nine million, two hundred one thousand, seventeen".