1122342140 has 48 divisors (see below), whose sum is σ = 2463132672. Its totient is φ = 429151296.

The previous prime is 1122342119. The next prime is 1122342149. The reversal of 1122342140 is 412432211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122342149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26537 + ... + 54303.

It is an arithmetic number, because the mean of its divisors is an integer number (51315264).

Almost surely, 2^1122342140 is an apocalyptic number.

1122342140 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 1122342140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231566336).

1122342140 is an abundant number, since it is smaller than the sum of its proper divisors (1340790532).

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

1122342140 is a wasteful number, since it uses less digits than its factorization.

1122342140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27866 (or 27864 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1122342140 is about 33501.3751956543. The cubic root of 1122342140 is about 1039.2222180235. Note that the first 4 decimals are identical.

Adding to 1122342140 its reverse (412432211), we get a palindrome (1534774351).

The spelling of 1122342140 in words is "one billion, one hundred twenty-two million, three hundred forty-two thousand, one hundred forty".