1121435442 has 160 divisors (see below), whose sum is σ = 2791905600. Its totient is φ = 335083392.

The previous prime is 1121435431. The next prime is 1121435453. The reversal of 1121435442 is 2445341211.

1121435442 is a `hidden beast` number, since 1 + 1 + 214 + 3 + 5 + 442 = 666.

It is an interprime number because it is at equal distance from previous prime (1121435431) and next prime (1121435453).

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4896984 + ... + 4897212.

It is an arithmetic number, because the mean of its divisors is an integer number (17449410).

Almost surely, 2^1121435442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121435442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395952800).

1121435442 is an abundant number, since it is smaller than the sum of its proper divisors (1670470158).

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

1121435442 is a wasteful number, since it uses less digits than its factorization.

1121435442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 333 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1121435442 is about 33487.8402110378. The cubic root of 1121435442 is about 1038.9422931159.

Adding to 1121435442 its reverse (2445341211), we get a palindrome (3566776653).

It can be divided in two parts, 11214 and 35442, that added together give a 6-th power (46656 = 6⁶).

The spelling of 1121435442 in words is "one billion, one hundred twenty-one million, four hundred thirty-five thousand, four hundred forty-two".