1403424020 has 24 divisors (see below), whose sum is σ = 2948690304. Its totient is φ = 561083936.

The previous prime is 1403423977. The next prime is 1403424053. The reversal of 1403424020 is 204243041.

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 = 1403423983 and 1403424001.

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, 24929 + ... + 58551.

It is an arithmetic number, because the mean of its divisors is an integer number (122862096).

Almost surely, 2^1403424020 is an apocalyptic number.

1403424020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1403424020 is an abundant number, since it is smaller than the sum of its proper divisors (1545266284).

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

1403424020 is a wasteful number, since it uses less digits than its factorization.

1403424020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35719 (or 35717 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1403424020 is about 37462.3013174578. The cubic root of 1403424020 is about 1119.6002027553.

Adding to 1403424020 its reverse (204243041), we get a palindrome (1607667061).

The spelling of 1403424020 in words is "one billion, four hundred three million, four hundred twenty-four thousand, twenty".