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149081201 = 1931253109
BaseRepresentation
bin10001110001011…
…00110001110001
3101101112002221222
420320230301301
5301131044301
622443154425
73460112033
oct1070546161
9341462858
10149081201
1177174a05
1241b15a15
1324b69939
1415b29c53
15d14c31b
hex8e2cc71

149081201 has 8 divisors (see below), whose sum is σ = 161990400. Its totient is φ = 136678320.

The previous prime is 149081189. The next prime is 149081213. The reversal of 149081201 is 102180941.

It is an interprime number because it is at equal distance from previous prime (149081189) and next prime (149081213).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-149081201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149081501) 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 7 ways as a sum of consecutive naturals, for example, 125966 + ... + 127143.

It is an arithmetic number, because the mean of its divisors is an integer number (20248800).

Almost surely, 2149081201 is an apocalyptic number.

It is an amenable number.

149081201 is a deficient number, since it is larger than the sum of its proper divisors (12909199).

149081201 is a wasteful number, since it uses less digits than its factorization.

149081201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253159.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 149081201 is about 12209.8812852542. The cubic root of 149081201 is about 530.2422068468.

The spelling of 149081201 in words is "one hundred forty-nine million, eighty-one thousand, two hundred one".

Divisors: 1 19 31 589 253109 4809071 7846379 149081201