1242912192 has 56 divisors (see below), whose sum is σ = 3302306832. Its totient is φ = 412569600.

The previous prime is 1242912191. The next prime is 1242912193. The reversal of 1242912192 is 2912192421.

It is an interprime number because it is at equal distance from previous prime (1242912191) and next prime (1242912193).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242912191) 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, 32842 + ... + 59702.

Almost surely, 2^1242912192 is an apocalyptic number.

1242912192 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 1242912192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1651153416).

1242912192 is an abundant number, since it is smaller than the sum of its proper divisors (2059394640).

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

1242912192 is a wasteful number, since it uses less digits than its factorization.

1242912192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27117 (or 27107 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 1242912192 is about 35254.9598212790. The cubic root of 1242912192 is about 1075.1774553273.

The spelling of 1242912192 in words is "one billion, two hundred forty-two million, nine hundred twelve thousand, one hundred ninety-two".