1299420 has 36 divisors (see below), whose sum is σ = 3942120. Its totient is φ = 346464.

The previous prime is 1299379. The next prime is 1299437. The reversal of 1299420 is 249921.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3430 + ... + 3789.

2^1299420 is an apocalyptic number.

1299420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1299420 is an abundant number, since it is smaller than the sum of its proper divisors (2642700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1299420 is a wasteful number, since it uses less digits than its factorization.

1299420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7234 (or 7229 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1299420 is about 1139.9210498978. The cubic root of 1299420 is about 109.1230549206.

The spelling of 1299420 in words is "one million, two hundred ninety-nine thousand, four hundred twenty".