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121029 = 340343
BaseRepresentation
bin11101100011000101
320011000120
4131203011
512333104
62332153
71012566
oct354305
9204016
10121029
1182a27
125a059
134311c
143216d
1525cd9
hex1d8c5

121029 has 4 divisors (see below), whose sum is σ = 161376. Its totient is φ = 80684.

The previous prime is 121021. The next prime is 121039. The reversal of 121029 is 920121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 920121 = 3306707.

It is a cyclic number.

It is not a de Polignac number, because 121029 - 23 = 121021 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120999 and 121017.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121029.

It is not an unprimeable number, because it can be changed into a prime (121021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20169 + ... + 20174.

It is an arithmetic number, because the mean of its divisors is an integer number (40344).

2121029 is an apocalyptic number.

It is an amenable number.

121029 is a deficient number, since it is larger than the sum of its proper divisors (40347).

121029 is an equidigital number, since it uses as much as digits as its factorization.

121029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40346.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 121029 is about 347.8922246903. The cubic root of 121029 is about 49.4648255366.

The spelling of 121029 in words is "one hundred twenty-one thousand, twenty-nine".

Divisors: 1 3 40343 121029