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124245139 is a prime number
BaseRepresentation
bin1110110011111…
…01010010010011
322122210022021211
413121331102103
5223301321024
620155000551
73036031504
oct731752223
9278708254
10124245139
1164151237
1235739157
131c982245
1412702bab
15ad93594
hex767d493

124245139 has 2 divisors, whose sum is σ = 124245140. Its totient is φ = 124245138.

The previous prime is 124245137. The next prime is 124245167. The reversal of 124245139 is 931542421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124245139 - 21 = 124245137 is a prime.

Together with 124245137, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124245139.

It is not a weakly prime, because it can be changed into another prime (124245137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62122569 + 62122570.

It is an arithmetic number, because the mean of its divisors is an integer number (62122570).

Almost surely, 2124245139 is an apocalyptic number.

124245139 is a deficient number, since it is larger than the sum of its proper divisors (1).

124245139 is an equidigital number, since it uses as much as digits as its factorization.

124245139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 124245139 is about 11146.5303570214. The cubic root of 124245139 is about 498.9914858327.

The spelling of 124245139 in words is "one hundred twenty-four million, two hundred forty-five thousand, one hundred thirty-nine".