1213140 has 24 divisors (see below), whose sum is σ = 3396960. Its totient is φ = 323488.

The previous prime is 1213133. The next prime is 1213141. The reversal of 1213140 is 413121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10050 + ... + 10169.

It is an arithmetic number, because the mean of its divisors is an integer number (141540).

2^1213140 is an apocalyptic number.

1213140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213140 is an abundant number, since it is smaller than the sum of its proper divisors (2183820).

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

1213140 is a wasteful number, since it uses less digits than its factorization.

1213140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20231 (or 20229 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1213140 is about 1101.4263479689. The cubic root of 1213140 is about 106.6523201191.

Adding to 1213140 its reverse (413121), we get a palindrome (1626261).

The spelling of 1213140 in words is "one million, two hundred thirteen thousand, one hundred forty".