1298743045 has 16 divisors (see below), whose sum is σ = 1570540608. Its totient is φ = 1030993920.

The previous prime is 1298743037. The next prime is 1298743049. The reversal of 1298743045 is 5403478921.

It is not a de Polignac number, because 1298743045 - 2³ = 1298743037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1298742992 and 1298743010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298743049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373957 + ... + 377413.

It is an arithmetic number, because the mean of its divisors is an integer number (98158788).

Almost surely, 2^1298743045 is an apocalyptic number.

It is an amenable number.

1298743045 is a deficient number, since it is larger than the sum of its proper divisors (271797563).

1298743045 is a wasteful number, since it uses less digits than its factorization.

1298743045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 1298743045 is about 36038.0777095560. The cubic root of 1298743045 is about 1091.0410179034.

The spelling of 1298743045 in words is "one billion, two hundred ninety-eight million, seven hundred forty-three thousand, forty-five".