1212404130 has 144 divisors (see below), whose sum is σ = 3827528640. Its totient is φ = 260780544.

The previous prime is 1212404111. The next prime is 1212404159. The reversal of 1212404130 is 314042121.

1212404130 is a `hidden beast` number, since 1 + 212 + 40 + 413 + 0 = 666.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 178741 + ... + 185399.

It is an arithmetic number, because the mean of its divisors is an integer number (26580060).

Almost surely, 2^1212404130 is an apocalyptic number.

1212404130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212404130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1913764320).

1212404130 is an abundant number, since it is smaller than the sum of its proper divisors (2615124510).

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

1212404130 is a wasteful number, since it uses less digits than its factorization.

1212404130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6713 (or 6693 counting only the distinct ones).

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

The square root of 1212404130 is about 34819.5940527744. The cubic root of 1212404130 is about 1066.3075126560.

Adding to 1212404130 its reverse (314042121), we get a palindrome (1526446251).

The spelling of 1212404130 in words is "one billion, two hundred twelve million, four hundred four thousand, one hundred thirty".