1245020 has 24 divisors (see below), whose sum is σ = 2988384. Its totient is φ = 426816.

The previous prime is 1245019. The next prime is 1245037. The reversal of 1245020 is 205421.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1244986 and 1245004.

It is a congruent number.

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, 4307 + ... + 4586.

It is an arithmetic number, because the mean of its divisors is an integer number (124516).

2^1245020 is an apocalyptic number.

1245020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245020 is an abundant number, since it is smaller than the sum of its proper divisors (1743364).

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

1245020 is a wasteful number, since it uses less digits than its factorization.

1245020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8909 (or 8907 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 1245020 is about 1115.8046423994. The cubic root of 1245020 is about 107.5784896402.

The spelling of 1245020 in words is "one million, two hundred forty-five thousand, twenty".