1121400242 has 8 divisors (see below), whose sum is σ = 1683677100. Its totient is φ = 560174544.

The previous prime is 1121400193. The next prime is 1121400251. The reversal of 1121400242 is 2420041211.

It can be written as a sum of positive squares in 2 ways, for example, as 1065434881 + 55965361 = 32641^2 + 7481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1121400242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260117 + ... + 264392.

Almost surely, 2^1121400242 is an apocalyptic number.

1121400242 is a deficient number, since it is larger than the sum of its proper divisors (562276858).

1121400242 is a wasteful number, since it uses less digits than its factorization.

1121400242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525580.

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

The square root of 1121400242 is about 33487.3146430107. The cubic root of 1121400242 is about 1038.9314227766.

Adding to 1121400242 its reverse (2420041211), we get a palindrome (3541441453).

The spelling of 1121400242 in words is "one billion, one hundred twenty-one million, four hundred thousand, two hundred forty-two".