1121754442 has 4 divisors (see below), whose sum is σ = 1682631666. Its totient is φ = 560877220.

The previous prime is 1121754409. The next prime is 1121754449. The reversal of 1121754442 is 2444571211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2444571211 = 29 ⋅84295559.

It can be written as a sum of positive squares in only one way, i.e., 746983561 + 374770881 = 27331^2 + 19359^2 .

It is not an unprimeable number, because it can be changed into a prime (1121754449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280438609 + ... + 280438612.

Almost surely, 2^1121754442 is an apocalyptic number.

1121754442 is a deficient number, since it is larger than the sum of its proper divisors (560877224).

1121754442 is an equidigital number, since it uses as much as digits as its factorization.

1121754442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560877223.

The product of its digits is 8960, while the sum is 31.

The square root of 1121754442 is about 33492.6027952442. The cubic root of 1121754442 is about 1039.0407951960.

The spelling of 1121754442 in words is "one billion, one hundred twenty-one million, seven hundred fifty-four thousand, four hundred forty-two".