1125821479 has 8 divisors (see below), whose sum is σ = 1142417360. Its totient is φ = 1109327616.

The previous prime is 1125821471. The next prime is 1125821491. The reversal of 1125821479 is 9741285211.

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 1125821479 - 2³ = 1125821471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125821471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3129 + ... + 47554.

It is an arithmetic number, because the mean of its divisors is an integer number (142802170).

Almost surely, 2^1125821479 is an apocalyptic number.

1125821479 is a deficient number, since it is larger than the sum of its proper divisors (16595881).

1125821479 is an equidigital number, since it uses as much as digits as its factorization.

1125821479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51009.

The product of its digits is 40320, while the sum is 40.

The square root of 1125821479 is about 33553.2633137226. The cubic root of 1125821479 is about 1040.2949973685.

The spelling of 1125821479 in words is "one billion, one hundred twenty-five million, eight hundred twenty-one thousand, four hundred seventy-nine".