1125420241 has 4 divisors (see below), whose sum is σ = 1227731184. Its totient is φ = 1023109300.

The previous prime is 1125420229. The next prime is 1125420251. The reversal of 1125420241 is 1420245211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1125420241 - 2²³ = 1117031633 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125420251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51155455 + ... + 51155476.

It is an arithmetic number, because the mean of its divisors is an integer number (306932796).

Almost surely, 2^1125420241 is an apocalyptic number.

1125420241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1125420241 is a deficient number, since it is larger than the sum of its proper divisors (102310943).

1125420241 is a wasteful number, since it uses less digits than its factorization.

1125420241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102310942.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1125420241 is about 33547.2836605291. The cubic root of 1125420241 is about 1040.1713971089.

Adding to 1125420241 its reverse (1420245211), we get a palindrome (2545665452).

The spelling of 1125420241 in words is "one billion, one hundred twenty-five million, four hundred twenty thousand, two hundred forty-one".