1427420 has 24 divisors (see below), whose sum is σ = 3024000. Its totient is φ = 565952.

The previous prime is 1427411. The next prime is 1427431. The reversal of 1427420 is 247241.

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

It is a junction number, because it is equal to n+sod(n) for n = 1427392 and 1427401.

It is a congruent number.

It is an unprimeable number.

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, 2741 + ... + 3219.

It is an arithmetic number, because the mean of its divisors is an integer number (126000).

2^1427420 is an apocalyptic number.

1427420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1427420 is an abundant number, since it is smaller than the sum of its proper divisors (1596580).

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

1427420 is a wasteful number, since it uses less digits than its factorization.

1427420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 1427420 is about 1194.7468351078. The cubic root of 1427420 is about 112.5945213849.

The spelling of 1427420 in words is "one million, four hundred twenty-seven thousand, four hundred twenty".