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14942921 = 72134703
BaseRepresentation
bin111001000000…
…001011001001
31001010011211112
4321000023021
512311133141
61252140105
7241004240
oct71001311
931104745
1014942921
118486924
125007635
133132686
141dad957
1514a27eb
hexe402c9

14942921 has 4 divisors (see below), whose sum is σ = 17077632. Its totient is φ = 12808212.

The previous prime is 14942909. The next prime is 14942927. The reversal of 14942921 is 12924941.

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: 12924941 = 21615981.

It is a cyclic number.

It is not a de Polignac number, because 14942921 - 210 = 14941897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14942927) 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, 1067345 + ... + 1067358.

It is an arithmetic number, because the mean of its divisors is an integer number (4269408).

Almost surely, 214942921 is an apocalyptic number.

It is an amenable number.

14942921 is a deficient number, since it is larger than the sum of its proper divisors (2134711).

14942921 is an equidigital number, since it uses as much as digits as its factorization.

14942921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134710.

The product of its digits is 5184, while the sum is 32.

The square root of 14942921 is about 3865.6074554978. The cubic root of 14942921 is about 246.3079899845.

The spelling of 14942921 in words is "fourteen million, nine hundred forty-two thousand, nine hundred twenty-one".

Divisors: 1 7 2134703 14942921