1121642375 has 32 divisors (see below), whose sum is σ = 1604803200. Its totient is φ = 766713600.

The previous prime is 1121642359. The next prime is 1121642387. The reversal of 1121642375 is 5732461211.

It is not a de Polignac number, because 1121642375 - 2⁴ = 1121642359 is a prime.

It is a super-3 number, since 3×1121642375³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 303539 + ... + 307211.

It is an arithmetic number, because the mean of its divisors is an integer number (50150100).

Almost surely, 2^1121642375 is an apocalyptic number.

1121642375 is a deficient number, since it is larger than the sum of its proper divisors (483160825).

1121642375 is an equidigital number, since it uses as much as digits as its factorization.

1121642375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044 (or 4034 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 1121642375 is about 33490.9297422451. The cubic root of 1121642375 is about 1039.0061928332.

The spelling of 1121642375 in words is "one billion, one hundred twenty-one million, six hundred forty-two thousand, three hundred seventy-five".