1121400523 has 8 divisors (see below), whose sum is σ = 1143056096. Its totient is φ = 1099915200.

The previous prime is 1121400517. The next prime is 1121400583. The reversal of 1121400523 is 3250041211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121400523 - 2²⁵ = 1087846091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121400523.

It is not an unprimeable number, because it can be changed into a prime (1121400503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29223 + ... + 55648.

It is an arithmetic number, because the mean of its divisors is an integer number (142882012).

Almost surely, 2^1121400523 is an apocalyptic number.

1121400523 is a deficient number, since it is larger than the sum of its proper divisors (21655573).

1121400523 is an equidigital number, since it uses as much as digits as its factorization.

1121400523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85125.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1121400523 is about 33487.3188386290. The cubic root of 1121400523 is about 1038.9315095549.

Adding to 1121400523 its reverse (3250041211), we get a palindrome (4371441734).

The spelling of 1121400523 in words is "one billion, one hundred twenty-one million, four hundred thousand, five hundred twenty-three".