1373420 has 24 divisors (see below), whose sum is σ = 2953104. Its totient is φ = 536256.

The previous prime is 1373419. The next prime is 1373431. The reversal of 1373420 is 243731.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a d-powerful number, because it can be written as 1 + 3 + 7⁷ + 3¹² + 4⁷ + 2¹¹ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 1373392 and 1373401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62 + ... + 1658.

It is an arithmetic number, because the mean of its divisors is an integer number (123046).

2^1373420 is an apocalyptic number.

1373420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1373420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1476552).

1373420 is an abundant number, since it is smaller than the sum of its proper divisors (1579684).

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

1373420 is a wasteful number, since it uses less digits than its factorization.

1373420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 1373420 is about 1171.9300320412. The cubic root of 1373420 is about 111.1563956154.

The spelling of 1373420 in words is "one million, three hundred seventy-three thousand, four hundred twenty".