1423319040 has 672 divisors, whose sum is σ = 6011119296. Its totient is φ = 318504960.

The previous prime is 1423319017. The next prime is 1423319041. The reversal of 1423319040 is 409133241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 1423318995 and 1423319013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423319041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109486074 + ... + 109486086.

It is an arithmetic number, because the mean of its divisors is an integer number (8945118).

Almost surely, 2^1423319040 is an apocalyptic number.

1423319040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423319040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3005559648).

1423319040 is an abundant number, since it is smaller than the sum of its proper divisors (4587800256).

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

1423319040 is an equidigital number, since it uses as much as digits as its factorization.

1423319040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1423319040 is about 37726.9007473447. The cubic root of 1423319040 is about 1124.8659040169.

The spelling of 1423319040 in words is "one billion, four hundred twenty-three million, three hundred nineteen thousand, forty".