1027420 has 24 divisors (see below), whose sum is σ = 2205504. Its totient is φ = 401856.

The previous prime is 1027417. The next prime is 1027421. The reversal of 1027420 is 247201.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1027394 and 1027403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1027421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394 + ... + 1486.

It is an arithmetic number, because the mean of its divisors is an integer number (91896).

2^1027420 is an apocalyptic number.

1027420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1027420 is an abundant number, since it is smaller than the sum of its proper divisors (1178084).

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

1027420 is a wasteful number, since it uses less digits than its factorization.

1027420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1147 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 1027420 is about 1013.6172847776. The cubic root of 1027420 is about 100.9057710182.

The spelling of 1027420 in words is "one million, twenty-seven thousand, four hundred twenty".