1401024020 has 24 divisors (see below), whose sum is σ = 3209619168. Its totient is φ = 509463200.

The previous prime is 1401023993. The next prime is 1401024029. The reversal of 1401024020 is 204201041.

It is a junction number, because it is equal to n+sod(n) for n = 1401023986 and 1401024004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401024029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3183926 + ... + 3184365.

It is an arithmetic number, because the mean of its divisors is an integer number (133734132).

Almost surely, 2^1401024020 is an apocalyptic number.

1401024020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401024020 is an abundant number, since it is smaller than the sum of its proper divisors (1808595148).

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

1401024020 is a wasteful number, since it uses less digits than its factorization.

1401024020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6368311 (or 6368309 counting only the distinct ones).

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

The square root of 1401024020 is about 37430.2554092274. The cubic root of 1401024020 is about 1118.9616279528.

Adding to 1401024020 its reverse (204201041), we get a palindrome (1605225061).

The spelling of 1401024020 in words is "one billion, four hundred one million, twenty-four thousand, twenty".