1260140 has 24 divisors (see below), whose sum is σ = 3024672. Its totient is φ = 432000.

The previous prime is 1260131. The next prime is 1260143. The reversal of 1260140 is 410621.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (1260143) 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 7 ways as a sum of consecutive naturals, for example, 4361 + ... + 4640.

It is an arithmetic number, because the mean of its divisors is an integer number (126028).

2^1260140 is an apocalyptic number.

1260140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1260140 is an abundant number, since it is smaller than the sum of its proper divisors (1764532).

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

1260140 is a wasteful number, since it uses less digits than its factorization.

1260140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9017 (or 9015 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1260140 is about 1122.5595752565. The cubic root of 1260140 is about 108.0122299822.

Adding to 1260140 its reverse (410621), we get a palindrome (1670761).

It can be divided in two parts, 1260 and 140, that multiplied together give a square (176400 = 420²).

The spelling of 1260140 in words is "one million, two hundred sixty thousand, one hundred forty".