1400041220 has 96 divisors (see below), whose sum is σ = 3219256320. Its totient is φ = 509483520.

The previous prime is 1400041219. The next prime is 1400041241. The reversal of 1400041220 is 221400041.

It is a junction number, because it is equal to n+sod(n) for n = 1400041195 and 1400041204.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1849082 + ... + 1849838.

It is an arithmetic number, because the mean of its divisors is an integer number (33533920).

Almost surely, 2^1400041220 is an apocalyptic number.

1400041220 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 1400041220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609628160).

1400041220 is an abundant number, since it is smaller than the sum of its proper divisors (1819215100).

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

1400041220 is a wasteful number, since it uses less digits than its factorization.

1400041220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973 (or 971 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1400041220 is about 37417.1246891046. The cubic root of 1400041220 is about 1118.6999211065.

Adding to 1400041220 its reverse (221400041), we get a palindrome (1621441261).

The spelling of 1400041220 in words is "one billion, four hundred million, forty-one thousand, two hundred twenty".