1423775240 has 32 divisors (see below), whose sum is σ = 3226889880. Its totient is φ = 565350912.

The previous prime is 1423775231. The next prime is 1423775251. The reversal of 1423775240 is 425773241.

It can be written as a sum of positive squares in 4 ways, for example, as 1226260324 + 197514916 = 35018^2 + 14054^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1423775240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124427 + ... + 135386.

Almost surely, 2^1423775240 is an apocalyptic number.

1423775240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423775240 is an abundant number, since it is smaller than the sum of its proper divisors (1803114640).

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

1423775240 is a wasteful number, since it uses less digits than its factorization.

1423775240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259961 (or 259957 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 1423775240 is about 37732.9463466610. The cubic root of 1423775240 is about 1124.9860712679.

The spelling of 1423775240 in words is "one billion, four hundred twenty-three million, seven hundred seventy-five thousand, two hundred forty".