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154242151 = 7213124029
BaseRepresentation
bin10010011000110…
…00110001100111
3101202020022110021
421030120301213
5303441222101
623145540011
73552015400
oct1114306147
9352208407
10154242151
117a07a458
12437a4607
1325c55a5b
14166b09a7
15d81b5a1
hex9318c67

154242151 has 12 divisors (see below), whose sum is σ = 180801720. Its totient is φ = 131192880.

The previous prime is 154242149. The next prime is 154242217. The reversal of 154242151 is 151242451.

It is not a de Polignac number, because 154242151 - 21 = 154242149 is a prime.

It is a super-2 number, since 2×1542421512 = 47581282290213602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154242131) 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 11 ways as a sum of consecutive naturals, for example, 5596 + ... + 18433.

It is an arithmetic number, because the mean of its divisors is an integer number (15066810).

Almost surely, 2154242151 is an apocalyptic number.

154242151 is a deficient number, since it is larger than the sum of its proper divisors (26559569).

154242151 is a wasteful number, since it uses less digits than its factorization.

154242151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24174 (or 24167 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 154242151 is about 12419.4263555126. The cubic root of 154242151 is about 536.2916367458.

The spelling of 154242151 in words is "one hundred fifty-four million, two hundred forty-two thousand, one hundred fifty-one".

Divisors: 1 7 49 131 917 6419 24029 168203 1177421 3147799 22034593 154242151