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121606471 = 7142912157
BaseRepresentation
bin1110011111110…
…01000101000111
322110211020201101
413033321011013
5222112401341
620022240531
73004431550
oct717710507
9273736641
10121606471
1162709818
1234886147
131c26a1bc
1412217327
15aa21831
hex73f9147

121606471 has 8 divisors (see below), whose sum is σ = 139087520. Its totient is φ = 104152608.

The previous prime is 121606469. The next prime is 121606477. The reversal of 121606471 is 174606121.

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

It is not a de Polignac number, because 121606471 - 21 = 121606469 is a prime.

It is a super-3 number, since 3×1216064713 (a number of 25 digits) contains 333 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 (121606477) 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, 3925 + ... + 16081.

It is an arithmetic number, because the mean of its divisors is an integer number (17385940).

Almost surely, 2121606471 is an apocalyptic number.

121606471 is a deficient number, since it is larger than the sum of its proper divisors (17481049).

121606471 is a wasteful number, since it uses less digits than its factorization.

121606471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13593.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 121606471 is about 11027.5324075697. The cubic root of 121606471 is about 495.4337197848.

The spelling of 121606471 in words is "one hundred twenty-one million, six hundred six thousand, four hundred seventy-one".

Divisors: 1 7 1429 10003 12157 85099 17372353 121606471