Search a number
-
+
122530413 = 340843471
BaseRepresentation
bin1110100110110…
…10101001101101
322112120012010110
413103122221231
5222331433123
620054130233
73015330345
oct723325155
9275505113
10122530413
116318aa05
1235050979
131c501905
14123b7d25
15ab55493
hex74daa6d

122530413 has 4 divisors (see below), whose sum is σ = 163373888. Its totient is φ = 81686940.

The previous prime is 122530393. The next prime is 122530417. The reversal of 122530413 is 314035221.

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: 314035221 = 3104678407.

It is not a de Polignac number, because 122530413 - 25 = 122530381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122530413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122530417) 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, 20421733 + ... + 20421738.

It is an arithmetic number, because the mean of its divisors is an integer number (40843472).

Almost surely, 2122530413 is an apocalyptic number.

It is an amenable number.

122530413 is a deficient number, since it is larger than the sum of its proper divisors (40843475).

122530413 is an equidigital number, since it uses as much as digits as its factorization.

122530413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40843474.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 122530413 is about 11069.3456446169. The cubic root of 122530413 is about 496.6852913054.

Adding to 122530413 its reverse (314035221), we get a palindrome (436565634).

The spelling of 122530413 in words is "one hundred twenty-two million, five hundred thirty thousand, four hundred thirteen".

Divisors: 1 3 40843471 122530413