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121405429 = 1312933163
BaseRepresentation
bin1110011110001…
…11111111110101
322110110000221101
413033013333311
5222034433204
620014050101
73002633455
oct717077765
9273400841
10121405429
1162591772
12347a9931
131c1c9842
14121a3d65
15a9d1ea4
hex73c7ff5

121405429 has 8 divisors (see below), whose sum is σ = 122788512. Its totient is φ = 120029520.

The previous prime is 121405423. The next prime is 121405439. The reversal of 121405429 is 924504121.

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

It is a cyclic number.

It is not a de Polignac number, because 121405429 - 29 = 121404917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121405397 and 121405406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121405423) 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, 36802 + ... + 39964.

It is an arithmetic number, because the mean of its divisors is an integer number (15348564).

Almost surely, 2121405429 is an apocalyptic number.

It is an amenable number.

121405429 is a deficient number, since it is larger than the sum of its proper divisors (1383083).

121405429 is a wasteful number, since it uses less digits than its factorization.

121405429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 121405429 is about 11018.4131797641. The cubic root of 121405429 is about 495.1605492207.

The spelling of 121405429 in words is "one hundred twenty-one million, four hundred five thousand, four hundred twenty-nine".

Divisors: 1 131 293 3163 38383 414353 926759 121405429