1240212612 has 72 divisors (see below), whose sum is σ = 3100462176. Its totient is φ = 385710336.

The previous prime is 1240212563. The next prime is 1240212661. The reversal of 1240212612 is 2162120421.

It is an interprime number because it is at equal distance from previous prime (1240212563) and next prime (1240212661).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288108 + ... + 292380.

Almost surely, 2^1240212612 is an apocalyptic number.

1240212612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240212612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1550231088).

1240212612 is an abundant number, since it is smaller than the sum of its proper divisors (1860249564).

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

1240212612 is a wasteful number, since it uses less digits than its factorization.

1240212612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385 (or 4364 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1240212612 is about 35216.6524814611. The cubic root of 1240212612 is about 1074.3984698867.

The spelling of 1240212612 in words is "one billion, two hundred forty million, two hundred twelve thousand, six hundred twelve".