1401422420 has 24 divisors (see below), whose sum is σ = 2943717504. Its totient is φ = 560429856.

The previous prime is 1401422401. The next prime is 1401422431. The reversal of 1401422420 is 242241041.

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 = 1401422392 and 1401422401.

It is a congruent number.

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, 121337 + ... + 132383.

It is an arithmetic number, because the mean of its divisors is an integer number (122654896).

Almost surely, 2^1401422420 is an apocalyptic number.

1401422420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401422420 is an abundant number, since it is smaller than the sum of its proper divisors (1542295084).

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

1401422420 is a wasteful number, since it uses less digits than its factorization.

1401422420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17399 (or 17397 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1401422420 is about 37435.5769289055. The cubic root of 1401422420 is about 1119.0676818242.

Adding to 1401422420 its reverse (242241041), we get a palindrome (1643663461).

The spelling of 1401422420 in words is "one billion, four hundred one million, four hundred twenty-two thousand, four hundred twenty".