1298146 has 4 divisors (see below), whose sum is σ = 1947222. Its totient is φ = 649072.

The previous prime is 1298131. The next prime is 1298149. The reversal of 1298146 is 6418921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6418921 = 277 ⋅23173.

It can be written as a sum of positive squares in only one way, i.e., 1185921 + 112225 = 1089^2 + 335^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324535 + ... + 324538.

2^1298146 is an apocalyptic number.

1298146 is a deficient number, since it is larger than the sum of its proper divisors (649076).

1298146 is an equidigital number, since it uses as much as digits as its factorization.

1298146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649075.

The product of its digits is 3456, while the sum is 31.

The square root of 1298146 is about 1139.3621022309. The cubic root of 1298146 is about 109.0873804835.

It can be divided in two parts, 1298 and 146, that added together give a square (1444 = 38²).

The spelling of 1298146 in words is "one million, two hundred ninety-eight thousand, one hundred forty-six".