1212461250 has 640 divisors, whose sum is σ = 4534548480. Its totient is φ = 207360000.

The previous prime is 1212461221. The next prime is 1212461287. The reversal of 1212461250 is 521642121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212461250.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 63813741 + ... + 63813759.

It is an arithmetic number, because the mean of its divisors is an integer number (7085232).

Almost surely, 2^1212461250 is an apocalyptic number.

1212461250 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 1212461250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2267274240).

1212461250 is an abundant number, since it is smaller than the sum of its proper divisors (3322087230).

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

1212461250 is a wasteful number, since it uses less digits than its factorization.

1212461250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1212461250 is about 34820.4142709417. The cubic root of 1212461250 is about 1066.3242580429.

The spelling of 1212461250 in words is "one billion, two hundred twelve million, four hundred sixty-one thousand, two hundred fifty".