1400401420 has 48 divisors (see below), whose sum is σ = 3218052096. Its totient is φ = 507672000.

The previous prime is 1400401417. The next prime is 1400401427. The reversal of 1400401420 is 241040041.

It is a super-3 number, since 3×1400401420³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1400401394 and 1400401403.

It is not an unprimeable number, because it can be changed into a prime (1400401427) 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, 63205 + ... + 82435.

It is an arithmetic number, because the mean of its divisors is an integer number (67042752).

Almost surely, 2^1400401420 is an apocalyptic number.

1400401420 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 1400401420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609026048).

1400401420 is an abundant number, since it is smaller than the sum of its proper divisors (1817650676).

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

1400401420 is a wasteful number, since it uses less digits than its factorization.

1400401420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19582 (or 19580 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1400401420 is about 37421.9376836636. The cubic root of 1400401420 is about 1118.7958518914.

Adding to 1400401420 its reverse (241040041), we get a palindrome (1641441461).

The spelling of 1400401420 in words is "one billion, four hundred million, four hundred one thousand, four hundred twenty".