1281190 has 8 divisors (see below), whose sum is σ = 2306160. Its totient is φ = 512472.

The previous prime is 1281187. The next prime is 1281193. The reversal of 1281190 is 911821.

It is an interprime number because it is at equal distance from previous prime (1281187) and next prime (1281193).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1281190² = 3282895632200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64050 + ... + 64069.

It is an arithmetic number, because the mean of its divisors is an integer number (288270).

2^1281190 is an apocalyptic number.

1281190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1281190 is a deficient number, since it is larger than the sum of its proper divisors (1024970).

1281190 is a wasteful number, since it uses less digits than its factorization.

1281190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128126.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1281190 is about 1131.8966383906. The cubic root of 1281190 is about 108.6103417103.

The spelling of 1281190 in words is "one million, two hundred eighty-one thousand, one hundred ninety".