Search a number
-
+
121470407 = 653186019
BaseRepresentation
bin1110011110101…
…11110111000111
322110120100001222
413033113313013
5222044023112
620015310555
73003324062
oct717276707
9273510058
10121470407
1162626573
123481b45b
131c2202a6
14121bd8d9
15a9e6372
hex73d7dc7

121470407 has 4 divisors (see below), whose sum is σ = 121657080. Its totient is φ = 121283736.

The previous prime is 121470403. The next prime is 121470409. The reversal of 121470407 is 704074121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704074121 = 739952739.

It is a cyclic number.

It is not a de Polignac number, because 121470407 - 22 = 121470403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121470403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92357 + ... + 93662.

It is an arithmetic number, because the mean of its divisors is an integer number (30414270).

Almost surely, 2121470407 is an apocalyptic number.

121470407 is a deficient number, since it is larger than the sum of its proper divisors (186673).

121470407 is an equidigital number, since it uses as much as digits as its factorization.

121470407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186672.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 121470407 is about 11021.3613950365. The cubic root of 121470407 is about 495.2488725740.

The spelling of 121470407 in words is "one hundred twenty-one million, four hundred seventy thousand, four hundred seven".

Divisors: 1 653 186019 121470407