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121924 = 221117163
BaseRepresentation
bin11101110001000100
320012020201
4131301010
512400144
62340244
71015315
oct356104
9205221
10121924
1183670
125a684
134365a
143260c
15261d4
hex1dc44

121924 has 24 divisors (see below), whose sum is σ = 247968. Its totient is φ = 51840.

The previous prime is 121921. The next prime is 121931. The reversal of 121924 is 429121.

It is not an unprimeable number, because it can be changed into a prime (121921) 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, 667 + ... + 829.

It is an arithmetic number, because the mean of its divisors is an integer number (10332).

2121924 is an apocalyptic number.

121924 is the 187-th nonagonal number.

It is an amenable number.

121924 is an abundant number, since it is smaller than the sum of its proper divisors (126044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121924 is a wasteful number, since it uses less digits than its factorization.

121924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 193 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 121924 is about 349.1761732994. The cubic root of 121924 is about 49.5864557191.

It can be divided in two parts, 12 and 1924, that added together give a square (1936 = 442).

The spelling of 121924 in words is "one hundred twenty-one thousand, nine hundred twenty-four".

Divisors: 1 2 4 11 17 22 34 44 68 163 187 326 374 652 748 1793 2771 3586 5542 7172 11084 30481 60962 121924