1087420 has 12 divisors (see below), whose sum is σ = 2283624. Its totient is φ = 434960.

The previous prime is 1087409. The next prime is 1087423. The reversal of 1087420 is 247801.

It is a junction number, because it is equal to n+sod(n) for n = 1087391 and 1087400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087423) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27166 + ... + 27205.

It is an arithmetic number, because the mean of its divisors is an integer number (190302).

2^1087420 is an apocalyptic number.

1087420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1087420 is an abundant number, since it is smaller than the sum of its proper divisors (1196204).

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

1087420 is a wasteful number, since it uses less digits than its factorization.

1087420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54380 (or 54378 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1087420 is about 1042.7943229611. The cubic root of 1087420 is about 102.8329841115.

The spelling of 1087420 in words is "one million, eighty-seven thousand, four hundred twenty".