1121320442 has 64 divisors (see below), whose sum is σ = 2002091904. Its totient is φ = 465315840.

The previous prime is 1121320427. The next prime is 1121320457. The reversal of 1121320442 is 2440231211.

It is an interprime number because it is at equal distance from previous prime (1121320427) and next prime (1121320457).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1828928 + ... + 1829540.

It is an arithmetic number, because the mean of its divisors is an integer number (31282686).

Almost surely, 2^1121320442 is an apocalyptic number.

1121320442 is a deficient number, since it is larger than the sum of its proper divisors (880771462).

1121320442 is a wasteful number, since it uses less digits than its factorization.

1121320442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783.

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

The square root of 1121320442 is about 33486.1231258562. The cubic root of 1121320442 is about 1038.9067783808.

Adding to 1121320442 its reverse (2440231211), we get a palindrome (3561551653).

The spelling of 1121320442 in words is "one billion, one hundred twenty-one million, three hundred twenty thousand, four hundred forty-two".