1403421400 has 48 divisors (see below), whose sum is σ = 3454901640. Its totient is φ = 528345600.

The previous prime is 1403421307. The next prime is 1403421403. The reversal of 1403421400 is 41243041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1403421403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202986 + ... + 209785.

Almost surely, 2^1403421400 is an apocalyptic number.

1403421400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1403421400 is an abundant number, since it is smaller than the sum of its proper divisors (2051480240).

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

1403421400 is a wasteful number, since it uses less digits than its factorization.

1403421400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412804 (or 412795 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1403421400 is about 37462.2663489544. The cubic root of 1403421400 is about 1119.5995060416.

Adding to 1403421400 its reverse (41243041), we get a palindrome (1444664441).

The spelling of 1403421400 in words is "one billion, four hundred three million, four hundred twenty-one thousand, four hundred".