1427261540 has 12 divisors (see below), whose sum is σ = 2997249276. Its totient is φ = 570904608.

The previous prime is 1427261519. The next prime is 1427261543. The reversal of 1427261540 is 451627241.

It can be written as a sum of positive squares in 2 ways, for example, as 854042176 + 573219364 = 29224^2 + 23942^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1427261497 and 1427261506.

It is not an unprimeable number, because it can be changed into a prime (1427261543) 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, 35681519 + ... + 35681558.

It is an arithmetic number, because the mean of its divisors is an integer number (249770773).

Almost surely, 2^1427261540 is an apocalyptic number.

1427261540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1427261540 is an abundant number, since it is smaller than the sum of its proper divisors (1569987736).

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

1427261540 is a wasteful number, since it uses less digits than its factorization.

1427261540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71363086 (or 71363084 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 1427261540 is about 37779.1151299233. The cubic root of 1427261540 is about 1125.9035480272.

Adding to 1427261540 its reverse (451627241), we get a palindrome (1878888781).

The spelling of 1427261540 in words is "one billion, four hundred twenty-seven million, two hundred sixty-one thousand, five hundred forty".