1423033240 has 32 divisors (see below), whose sum is σ = 3208811760. Its totient is φ = 567971200.

The previous prime is 1423033237. The next prime is 1423033247. The reversal of 1423033240 is 423303241.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423033247) 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, 20146 + ... + 57025.

Almost surely, 2^1423033240 is an apocalyptic number.

1423033240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423033240 is an abundant number, since it is smaller than the sum of its proper divisors (1785778520).

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

1423033240 is a wasteful number, since it uses less digits than its factorization.

1423033240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77643 (or 77639 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 1423033240 is about 37723.1128089928. The cubic root of 1423033240 is about 1124.7906086013.

Adding to 1423033240 its reverse (423303241), we get a palindrome (1846336481).

The spelling of 1423033240 in words is "one billion, four hundred twenty-three million, thirty-three thousand, two hundred forty".