1403204420 has 48 divisors (see below), whose sum is σ = 2990711808. Its totient is φ = 552963840.

The previous prime is 1403204417. The next prime is 1403204431. The reversal of 1403204420 is 244023041.

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 = 1403204392 and 1403204401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407024 + ... + 410456.

It is an arithmetic number, because the mean of its divisors is an integer number (62306496).

Almost surely, 2^1403204420 is an apocalyptic number.

1403204420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1403204420 is an abundant number, since it is smaller than the sum of its proper divisors (1587507388).

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

1403204420 is a wasteful number, since it uses less digits than its factorization.

1403204420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740 (or 3738 counting only the distinct ones).

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

The square root of 1403204420 is about 37459.3702563190. The cubic root of 1403204420 is about 1119.5418034343.

Adding to 1403204420 its reverse (244023041), we get a palindrome (1647227461).

The spelling of 1403204420 in words is "one billion, four hundred three million, two hundred four thousand, four hundred twenty".