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123040427 is a prime number
BaseRepresentation
bin1110101010101…
…11001010101011
322120112002201212
413111113022223
5222444243202
620113103335
73022553306
oct725271253
9276462655
10123040427
11634a9104
1235257b4b
131c64cab3
14124abb3d
15ac06652
hex75572ab

123040427 has 2 divisors, whose sum is σ = 123040428. Its totient is φ = 123040426.

The previous prime is 123040403. The next prime is 123040433. The reversal of 123040427 is 724040321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-123040427 is a prime.

It is not a weakly prime, because it can be changed into another prime (123040327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61520213 + 61520214.

It is an arithmetic number, because the mean of its divisors is an integer number (61520214).

Almost surely, 2123040427 is an apocalyptic number.

123040427 is a deficient number, since it is larger than the sum of its proper divisors (1).

123040427 is an equidigital number, since it uses as much as digits as its factorization.

123040427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 123040427 is about 11092.3589465902. The cubic root of 123040427 is about 497.3734627639.

Adding to 123040427 its reverse (724040321), we get a palindrome (847080748).

The spelling of 123040427 in words is "one hundred twenty-three million, forty thousand, four hundred twenty-seven".