1320975 has 48 divisors (see below), whose sum is σ = 2579200. Its totient is φ = 660960.

The previous prime is 1320973. The next prime is 1320983. The reversal of 1320975 is 5790231.

It is not a de Polignac number, because 1320975 - 2¹ = 1320973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320973) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12774 + ... + 12876.

2^1320975 is an apocalyptic number.

1320975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1320975 is a deficient number, since it is larger than the sum of its proper divisors (1258225).

1320975 is a wasteful number, since it uses less digits than its factorization.

1320975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 1320975 is about 1149.3367652694. The cubic root of 1320975 is about 109.7231329187.

The spelling of 1320975 in words is "one million, three hundred twenty thousand, nine hundred seventy-five".