103140449 has 2 divisors, whose sum is σ = 103140450. Its totient is φ = 103140448.

The previous prime is 103140439. The next prime is 103140451. The reversal of 103140449 is 944041301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102657424 + 483025 = 10132^2 + 695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103140449 is a prime.

Together with 103140451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103140439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51570224 + 51570225.

It is an arithmetic number, because the mean of its divisors is an integer number (51570225).

Almost surely, 2^103140449 is an apocalyptic number.

It is an amenable number.

103140449 is a deficient number, since it is larger than the sum of its proper divisors (1).

103140449 is an equidigital number, since it uses as much as digits as its factorization.

103140449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 103140449 is about 10155.8086334866. The cubic root of 103140449 is about 468.9677799540.

The spelling of 103140449 in words is "one hundred three million, one hundred forty thousand, four hundred forty-nine".