1365420 has 48 divisors (see below), whose sum is σ = 4370688. Its totient is φ = 312000.

The previous prime is 1365383. The next prime is 1365431. The reversal of 1365420 is 245631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1206 + ... + 2045.

It is an arithmetic number, because the mean of its divisors is an integer number (91056).

2^1365420 is an apocalyptic number.

1365420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1365420 is an abundant number, since it is smaller than the sum of its proper divisors (3005268).

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

1365420 is a wasteful number, since it uses less digits than its factorization.

1365420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3270 (or 3268 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1365420 is about 1168.5118741374. The cubic root of 1365420 is about 110.9401511633.

The spelling of 1365420 in words is "one million, three hundred sixty-five thousand, four hundred twenty".