1270140 has 24 divisors (see below), whose sum is σ = 3556560. Its totient is φ = 338688.

The previous prime is 1270123. The next prime is 1270141. The reversal of 1270140 is 410721.

Added to its reverse (410721) it gives a triangular number (1680861 = T₁₈₃₃).

It is a super-2 number, since 2×1270140² = 3226511239200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270141) 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, 10525 + ... + 10644.

It is an arithmetic number, because the mean of its divisors is an integer number (148190).

2^1270140 is an apocalyptic number.

1270140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1270140 is an abundant number, since it is smaller than the sum of its proper divisors (2286420).

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

1270140 is a wasteful number, since it uses less digits than its factorization.

1270140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21181 (or 21179 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 1270140 is about 1127.0048802024. The cubic root of 1270140 is about 108.2971924152.

Adding to 1270140 its reverse (410721), we get a palindrome (1680861).

The spelling of 1270140 in words is "one million, two hundred seventy thousand, one hundred forty".