1298910139 has 8 divisors (see below), whose sum is σ = 1317846240. Its totient is φ = 1279992000.

The previous prime is 1298910113. The next prime is 1298910157. The reversal of 1298910139 is 9310198921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1298910139 - 2⁹ = 1298909627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1298910095 and 1298910104.

It is not an unprimeable number, because it can be changed into a prime (1298910439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224989 + ... + 230689.

It is an arithmetic number, because the mean of its divisors is an integer number (164730780).

Almost surely, 2^1298910139 is an apocalyptic number.

1298910139 is a deficient number, since it is larger than the sum of its proper divisors (18936101).

1298910139 is an equidigital number, since it uses as much as digits as its factorization.

1298910139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8981.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 1298910139 is about 36040.3959328973. The cubic root of 1298910139 is about 1091.0878063708.

The spelling of 1298910139 in words is "one billion, two hundred ninety-eight million, nine hundred ten thousand, one hundred thirty-nine".