403421140 has 24 divisors (see below), whose sum is σ = 867849192. Its totient is φ = 157432320.

The previous prime is 403421119. The next prime is 403421153. The reversal of 403421140 is 41124304.

It can be written as a sum of positive squares in 4 ways, for example, as 60652944 + 342768196 = 7788^2 + 18514^2 .

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, 245169 + ... + 246808.

It is an arithmetic number, because the mean of its divisors is an integer number (36160383).

Almost surely, 2^403421140 is an apocalyptic number.

It is an amenable number.

403421140 is an abundant number, since it is smaller than the sum of its proper divisors (464428052).

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

403421140 is a wasteful number, since it uses less digits than its factorization.

403421140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492027 (or 492025 counting only the distinct ones).

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

The square root of 403421140 is about 20085.3463998010. The cubic root of 403421140 is about 738.9009372432.

Adding to 403421140 its reverse (41124304), we get a palindrome (444545444).

The spelling of 403421140 in words is "four hundred three million, four hundred twenty-one thousand, one hundred forty".