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121606071 = 3191212227
BaseRepresentation
bin1110011111110…
…00111110110111
322110211020011120
413033320332313
5222112343241
620022235023
73004430436
oct717707667
9273736146
10121606071
1162709494
1234885a73
131c269c72
141221711d
15aa21666
hex73f8fb7

121606071 has 8 divisors (see below), whose sum is σ = 162991104. Its totient is φ = 80645880.

The previous prime is 121606027. The next prime is 121606097. The reversal of 121606071 is 170606121.

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

It is not a de Polignac number, because 121606071 - 26 = 121606007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121606171) 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, 105541 + ... + 106686.

It is an arithmetic number, because the mean of its divisors is an integer number (20373888).

Almost surely, 2121606071 is an apocalyptic number.

121606071 is a deficient number, since it is larger than the sum of its proper divisors (41385033).

121606071 is a wasteful number, since it uses less digits than its factorization.

121606071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212421.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 121606071 is about 11027.5142711311. The cubic root of 121606071 is about 495.4331765744.

Subtracting 121606071 from its reverse (170606121), we obtain a triangular number (49000050 = T9899).

The spelling of 121606071 in words is "one hundred twenty-one million, six hundred six thousand, seventy-one".

Divisors: 1 3 191 573 212227 636681 40535357 121606071