1145425420 has 24 divisors (see below), whose sum is σ = 2406202848. Its totient is φ = 458016000.

The previous prime is 1145425409. The next prime is 1145425433. The reversal of 1145425420 is 245245411.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65620 + ... + 81220.

It is an arithmetic number, because the mean of its divisors is an integer number (100258452).

Almost surely, 2^1145425420 is an apocalyptic number.

1145425420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145425420 is an abundant number, since it is smaller than the sum of its proper divisors (1260777428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145425420 is a wasteful number, since it uses less digits than its factorization.

1145425420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19281 (or 19279 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 1145425420 is about 33844.1342037287. The cubic root of 1145425420 is about 1046.2985071532.

Subtracting from 1145425420 its reverse (245245411), we obtain a square (900180009 = 30003²).

The spelling of 1145425420 in words is "one billion, one hundred forty-five million, four hundred twenty-five thousand, four hundred twenty".