1242076140 has 96 divisors (see below), whose sum is σ = 3958557120. Its totient is φ = 323136000.

The previous prime is 1242076139. The next prime is 1242076183. The reversal of 1242076140 is 416702421.

1242076140 is a `hidden beast` number, since 1 + 2 + 42 + 0 + 7 + 614 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5911 + ... + 50190.

It is an arithmetic number, because the mean of its divisors is an integer number (41234970).

Almost surely, 2^1242076140 is an apocalyptic number.

1242076140 is a gapful number since it is divisible by the number (10) 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 1242076140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1979278560).

1242076140 is an abundant number, since it is smaller than the sum of its proper divisors (2716480980).

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

1242076140 is a wasteful number, since it uses less digits than its factorization.

1242076140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56160 (or 56152 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1242076140 is about 35243.1006013943. The cubic root of 1242076140 is about 1074.9363264972.

Adding to 1242076140 its reverse (416702421), we get a palindrome (1658778561).

The spelling of 1242076140 in words is "one billion, two hundred forty-two million, seventy-six thousand, one hundred forty".