1427540 has 24 divisors (see below), whose sum is σ = 3025512. Its totient is φ = 565760.

The previous prime is 1427539. The next prime is 1427551. The reversal of 1427540 is 457241.

It can be written as a sum of positive squares in 4 ways, for example, as 91204 + 1336336 = 302^2 + 1156^2 .

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, 2480 + ... + 3000.

It is an arithmetic number, because the mean of its divisors is an integer number (126063).

2^1427540 is an apocalyptic number.

1427540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1427540 is an abundant number, since it is smaller than the sum of its proper divisors (1597972).

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

1427540 is a wasteful number, since it uses less digits than its factorization.

1427540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 1427540 is about 1194.7970538966. The cubic root of 1427540 is about 112.5976764861.

Subtracting from 1427540 its reverse (457241), we obtain a cube (970299 = 99³).

The spelling of 1427540 in words is "one million, four hundred twenty-seven thousand, five hundred forty".