1264140 has 48 divisors (see below), whose sum is σ = 3934560. Its totient is φ = 336960.

The previous prime is 1264129. The next prime is 1264177. The reversal of 1264140 is 414621.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631 + ... + 1710.

It is an arithmetic number, because the mean of its divisors is an integer number (81970).

2^1264140 is an apocalyptic number.

1264140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264140 is an abundant number, since it is smaller than the sum of its proper divisors (2670420).

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

1264140 is a wasteful number, since it uses less digits than its factorization.

1264140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359 (or 2351 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1264140 is about 1124.3398062863. The cubic root of 1264140 is about 108.1263952285.

Adding to 1264140 its reverse (414621), we get a palindrome (1678761).

The spelling of 1264140 in words is "one million, two hundred sixty-four thousand, one hundred forty".