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122441431 = 717491633
BaseRepresentation
bin1110100110001…
…00111011010111
322112101200001211
413103010323113
5222321111211
620052202251
73014510050
oct723047327
9275350054
10122441431
116312a072
1235009387
131c4a0268
1412393727
15ab38e21
hex74c4ed7

122441431 has 4 divisors (see below), whose sum is σ = 139933072. Its totient is φ = 104949792.

The previous prime is 122441419. The next prime is 122441441. The reversal of 122441431 is 134144221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134144221 = 1131187117.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-122441431 is a prime.

It is a super-2 number, since 2×1224414312 = 29983808050655522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122441441) 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, 8745810 + ... + 8745823.

It is an arithmetic number, because the mean of its divisors is an integer number (34983268).

Almost surely, 2122441431 is an apocalyptic number.

122441431 is a deficient number, since it is larger than the sum of its proper divisors (17491641).

122441431 is an equidigital number, since it uses as much as digits as its factorization.

122441431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17491640.

The product of its digits is 768, while the sum is 22.

The square root of 122441431 is about 11065.3256165375. The cubic root of 122441431 is about 496.5650306772.

Adding to 122441431 its reverse (134144221), we get a palindrome (256585652).

The spelling of 122441431 in words is "one hundred twenty-two million, four hundred forty-one thousand, four hundred thirty-one".

Divisors: 1 7 17491633 122441431