1401423320 has 64 divisors (see below), whose sum is σ = 3519901440. Its totient is φ = 497750400.

The previous prime is 1401423301. The next prime is 1401423323. The reversal of 1401423320 is 233241041.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1401423292 and 1401423301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401423323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18116 + ... + 55955.

It is an arithmetic number, because the mean of its divisors is an integer number (54998460).

Almost surely, 2^1401423320 is an apocalyptic number.

1401423320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401423320 is an abundant number, since it is smaller than the sum of its proper divisors (2118478120).

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

1401423320 is a wasteful number, since it uses less digits than its factorization.

1401423320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74136 (or 74132 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1401423320 is about 37435.5889495544. The cubic root of 1401423320 is about 1119.0679213809.

Adding to 1401423320 its reverse (233241041), we get a palindrome (1634664361).

The spelling of 1401423320 in words is "one billion, four hundred one million, four hundred twenty-three thousand, three hundred twenty".