403003400240 has 80 divisors (see below), whose sum is σ = 1079269588992. Its totient is φ = 137084596992.

The previous prime is 403003400237. The next prime is 403003400249. The reversal of 403003400240 is 42004300304.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (403003400249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2762144 + ... + 2904383.

Almost surely, 2^403003400240 is an apocalyptic number.

403003400240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403003400240 is an abundant number, since it is smaller than the sum of its proper divisors (676266188752).

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

403003400240 is a wasteful number, since it uses less digits than its factorization.

403003400240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5666674 (or 5666668 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 403003400240 its reverse (42004300304), we get a palindrome (445007700544).

The spelling of 403003400240 in words is "four hundred three billion, three million, four hundred thousand, two hundred forty".