1045420 has 24 divisors (see below), whose sum is σ = 2215584. Its totient is φ = 414336.

The previous prime is 1045411. The next prime is 1045423. The reversal of 1045420 is 245401.

It is a junction number, because it is equal to n+sod(n) for n = 1045394 and 1045403.

It is not an unprimeable number, because it can be changed into a prime (1045423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3184 + ... + 3496.

It is an arithmetic number, because the mean of its divisors is an integer number (92316).

2^1045420 is an apocalyptic number.

1045420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1045420 is the 835-th pentagonal number.

It is an amenable number.

1045420 is an abundant number, since it is smaller than the sum of its proper divisors (1170164).

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

1045420 is a wasteful number, since it uses less digits than its factorization.

1045420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1045420 is about 1022.4578230910. The cubic root of 1045420 is about 101.4916394871.

The spelling of 1045420 in words is "one million, forty-five thousand, four hundred twenty".