1122142040 has 16 divisors (see below), whose sum is σ = 2524819680. Its totient is φ = 448856800.

The previous prime is 1122142019. The next prime is 1122142051. The reversal of 1122142040 is 402412211.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 14026736 + ... + 14026815.

It is an arithmetic number, because the mean of its divisors is an integer number (157801230).

Almost surely, 2^1122142040 is an apocalyptic number.

1122142040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122142040 is an abundant number, since it is smaller than the sum of its proper divisors (1402677640).

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

1122142040 is a wasteful number, since it uses less digits than its factorization.

1122142040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28053562 (or 28053558 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1122142040 is about 33498.3886179619. The cubic root of 1122142040 is about 1039.1604541110.

Adding to 1122142040 its reverse (402412211), we get a palindrome (1524554251).

The spelling of 1122142040 in words is "one billion, one hundred twenty-two million, one hundred forty-two thousand, forty".