1125398 has 4 divisors (see below), whose sum is σ = 1688100. Its totient is φ = 562698.

The previous prime is 1125391. The next prime is 1125401. The reversal of 1125398 is 8935211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8935211 = 313 ⋅28547.

It is a self number, because there is not a number n which added to its sum of digits gives 1125398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281348 + ... + 281351.

It is an arithmetic number, because the mean of its divisors is an integer number (422025).

2^1125398 is an apocalyptic number.

1125398 is a deficient number, since it is larger than the sum of its proper divisors (562702).

1125398 is an equidigital number, since it uses as much as digits as its factorization.

1125398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562701.

The product of its digits is 2160, while the sum is 29.

The square root of 1125398 is about 1060.8477741882. The cubic root of 1125398 is about 104.0164544971.

It can be divided in two parts, 11 and 25398, that multiplied together give a triangular number (279378 = T₇₄₇).

The spelling of 1125398 in words is "one million, one hundred twenty-five thousand, three hundred ninety-eight".